WGU D115 OBJECTIVE ASSESSMENT (OA)
EXAM Questions And Correct Answers With
Rationales
Practice Question Bank & Answer Rationale
THIS PACK CONTAINS
148 exam-style multiple-choice questions. Each question includes the correct answer and a complete
rationale for focused revision.
COVERAGE
WGU D115 is an objective assessment covering community and population health nursing. It emphasizes
epidemiology, health promotion, disease prevention, cultural competence, informatics, disaster preparedness,
and care coordination across diverse populations.
STUDY GUIDE
Recommended duration: 2 hours. Passing target: 80%.
HIGHP - Page 1 of 48
,1. A community health nurse is planning a primary prevention program. Which
intervention best exemplifies primary prevention?
[ ] A. Providing rehabilitation services after a stroke
[ ] B. Conducting blood pressure screenings at a health fair
[ ] C. Administering influenza vaccinations to older adults
[ ] D. Offering support groups for individuals with diabetes
CORRECT: C. Administering influenza vaccinations to older adults
Primary prevention aims to prevent disease before it occurs; vaccination is a classic example. Screening (B)
is secondary prevention, while rehabilitation (A) and support groups (D) are tertiary prevention.
2. Which measure of disease frequency is most appropriate for comparing the risk of
developing a disease between two populations?
[ ] A. Prevalence
[ ] B. Incidence rate
[ ] C. Attack rate
[ ] D. Case fatality rate
CORRECT: B. Incidence rate
Incidence rate measures new cases and is used to compare risk between populations. Prevalence (A)
reflects existing cases, attack rate (C) is for specific outbreaks, and case fatality (D) measures severity, not
risk.
3. A nurse is assessing a community's cultural practices. Which action demonstrates
cultural competence?
[ ] A. Applying the nurse's own cultural values to guide care
[ ] B. Asking the client to explain their health beliefs and practices
[ ] C. Avoiding discussion of cultural differences to prevent bias
[ ] D. Using a standardized care plan for all clients of a given culture
CORRECT: B. Asking the client to explain their health beliefs and practices
Cultural competence involves respecting and integrating the client's cultural beliefs into care, which begins
with assessment. Imposing one's own values (A) or stereotyping (D) is culturally incompetent, and ignoring
differences (C) is cultural blindness.
4. Which data source is most useful for conducting a community health needs
assessment?
[ ] A. Individual patient charts from a local clinic
[ ] B. National census and vital statistics
[ ] C. Hospital discharge summaries
HIGHP - Page 2 of 48
, [ ] D. Pharmacy prescription records
CORRECT: B. National census and vital statistics
Census and vital statistics provide population-level data essential for community assessment. The other
options are clinical data sources that reflect individual-level information and are less representative of the
entire community.
5. A nurse is evaluating the effectiveness of a community health program. Which outcome
measure best reflects the program's impact on population health?
[ ] A. Number of participants who attended the program
[ ] B. Participant satisfaction scores
[ ] C. Reduction in the incidence of the targeted disease
[ ] D. Total budget spent on the program
CORRECT: C. Reduction in the incidence of the targeted disease
The ultimate goal of a health program is to improve health outcomes, such as reducing disease incidence.
Attendance (A) and satisfaction (B) are process measures, and budget (D) is an input measure, not an
outcome.
6. During a disaster, which client should the nurse prioritize for immediate care using
triage principles?
[ ] A. A client with a minor laceration
[ ] B. A client with a tension pneumothorax
[ ] C. A client with a fractured arm
[ ] D. A client with a sprained ankle
CORRECT: B. A client with a tension pneumothorax
Tension pneumothorax is a life-threatening condition requiring immediate intervention. The other clients have
less urgent conditions that can wait or be treated with simple measures.
7. Which action best demonstrates the use of informatics in community health nursing?
[ ] A. Using a paper-based system to track immunization rates
[ ] B. Analyzing electronic health record data to identify diabetes hotspots
[ ] C. Conducting home visits without documenting in a database
[ ] D. Relying on memory to recall client allergies
CORRECT: B. Analyzing electronic health record data to identify diabetes hotspots
Informatics involves using technology to manage and analyze health data for population health improvement.
The other options reflect outdated or unsafe practices that do not leverage informatics.
HIGHP - Page 3 of 48
, 8. A nurse is developing a plan to address a communicable disease outbreak. Which step
should be taken first?
[ ] A. Implementing isolation precautions
[ ] B. Identifying the causative agent and mode of transmission
[ ] C. Administering prophylactic antibiotics
[ ] D. Educating the public about hand hygiene
CORRECT: B. Identifying the causative agent and mode of transmission
Before interventions can be effective, the nurse must first identify the agent and transmission route to tailor
control measures. The other actions are important but follow the initial assessment.
9. Which factor is a social determinant of health that most directly influences a
community's health status?
[ ] A. Genetic predisposition to chronic diseases
[ ] B. Access to affordable healthy food
[ ] C. Individual lifestyle choices
[ ] D. Availability of advanced medical technology
CORRECT: B. Access to affordable healthy food
Social determinants of health include economic and environmental factors like food access, which shape
health behaviors and outcomes. Genetics (A) and lifestyle (C) are individual factors, and technology (D) is a
healthcare resource, not a social determinant.
10. A nurse is advocating for a policy to increase funding for community health centers.
Which level of prevention does this represent?
[ ] A. Primary prevention
[ ] B. Secondary prevention
[ ] C. Tertiary prevention
[ ] D. Quaternary prevention
CORRECT: A. Primary prevention
Advocating for policies that improve access to care and prevent disease falls under primary prevention.
Secondary and tertiary prevention focus on early detection and rehabilitation, respectively, and quaternary
prevention addresses overmedicalization.
11. A nurse is preparing to administer a medication that is highly protein-bound to a
patient with severe hypoalbuminemia. Which pharmacokinetic consequence should the
nurse anticipate?
[ ] A. Decreased free drug concentration and reduced therapeutic effect
[ ] B. Increased free drug concentration and elevated risk of toxicity
HIGHP - Page 4 of 48
EXAM Questions And Correct Answers With
Rationales
Practice Question Bank & Answer Rationale
THIS PACK CONTAINS
148 exam-style multiple-choice questions. Each question includes the correct answer and a complete
rationale for focused revision.
COVERAGE
WGU D115 is an objective assessment covering community and population health nursing. It emphasizes
epidemiology, health promotion, disease prevention, cultural competence, informatics, disaster preparedness,
and care coordination across diverse populations.
STUDY GUIDE
Recommended duration: 2 hours. Passing target: 80%.
HIGHP - Page 1 of 48
,1. A community health nurse is planning a primary prevention program. Which
intervention best exemplifies primary prevention?
[ ] A. Providing rehabilitation services after a stroke
[ ] B. Conducting blood pressure screenings at a health fair
[ ] C. Administering influenza vaccinations to older adults
[ ] D. Offering support groups for individuals with diabetes
CORRECT: C. Administering influenza vaccinations to older adults
Primary prevention aims to prevent disease before it occurs; vaccination is a classic example. Screening (B)
is secondary prevention, while rehabilitation (A) and support groups (D) are tertiary prevention.
2. Which measure of disease frequency is most appropriate for comparing the risk of
developing a disease between two populations?
[ ] A. Prevalence
[ ] B. Incidence rate
[ ] C. Attack rate
[ ] D. Case fatality rate
CORRECT: B. Incidence rate
Incidence rate measures new cases and is used to compare risk between populations. Prevalence (A)
reflects existing cases, attack rate (C) is for specific outbreaks, and case fatality (D) measures severity, not
risk.
3. A nurse is assessing a community's cultural practices. Which action demonstrates
cultural competence?
[ ] A. Applying the nurse's own cultural values to guide care
[ ] B. Asking the client to explain their health beliefs and practices
[ ] C. Avoiding discussion of cultural differences to prevent bias
[ ] D. Using a standardized care plan for all clients of a given culture
CORRECT: B. Asking the client to explain their health beliefs and practices
Cultural competence involves respecting and integrating the client's cultural beliefs into care, which begins
with assessment. Imposing one's own values (A) or stereotyping (D) is culturally incompetent, and ignoring
differences (C) is cultural blindness.
4. Which data source is most useful for conducting a community health needs
assessment?
[ ] A. Individual patient charts from a local clinic
[ ] B. National census and vital statistics
[ ] C. Hospital discharge summaries
HIGHP - Page 2 of 48
, [ ] D. Pharmacy prescription records
CORRECT: B. National census and vital statistics
Census and vital statistics provide population-level data essential for community assessment. The other
options are clinical data sources that reflect individual-level information and are less representative of the
entire community.
5. A nurse is evaluating the effectiveness of a community health program. Which outcome
measure best reflects the program's impact on population health?
[ ] A. Number of participants who attended the program
[ ] B. Participant satisfaction scores
[ ] C. Reduction in the incidence of the targeted disease
[ ] D. Total budget spent on the program
CORRECT: C. Reduction in the incidence of the targeted disease
The ultimate goal of a health program is to improve health outcomes, such as reducing disease incidence.
Attendance (A) and satisfaction (B) are process measures, and budget (D) is an input measure, not an
outcome.
6. During a disaster, which client should the nurse prioritize for immediate care using
triage principles?
[ ] A. A client with a minor laceration
[ ] B. A client with a tension pneumothorax
[ ] C. A client with a fractured arm
[ ] D. A client with a sprained ankle
CORRECT: B. A client with a tension pneumothorax
Tension pneumothorax is a life-threatening condition requiring immediate intervention. The other clients have
less urgent conditions that can wait or be treated with simple measures.
7. Which action best demonstrates the use of informatics in community health nursing?
[ ] A. Using a paper-based system to track immunization rates
[ ] B. Analyzing electronic health record data to identify diabetes hotspots
[ ] C. Conducting home visits without documenting in a database
[ ] D. Relying on memory to recall client allergies
CORRECT: B. Analyzing electronic health record data to identify diabetes hotspots
Informatics involves using technology to manage and analyze health data for population health improvement.
The other options reflect outdated or unsafe practices that do not leverage informatics.
HIGHP - Page 3 of 48
, 8. A nurse is developing a plan to address a communicable disease outbreak. Which step
should be taken first?
[ ] A. Implementing isolation precautions
[ ] B. Identifying the causative agent and mode of transmission
[ ] C. Administering prophylactic antibiotics
[ ] D. Educating the public about hand hygiene
CORRECT: B. Identifying the causative agent and mode of transmission
Before interventions can be effective, the nurse must first identify the agent and transmission route to tailor
control measures. The other actions are important but follow the initial assessment.
9. Which factor is a social determinant of health that most directly influences a
community's health status?
[ ] A. Genetic predisposition to chronic diseases
[ ] B. Access to affordable healthy food
[ ] C. Individual lifestyle choices
[ ] D. Availability of advanced medical technology
CORRECT: B. Access to affordable healthy food
Social determinants of health include economic and environmental factors like food access, which shape
health behaviors and outcomes. Genetics (A) and lifestyle (C) are individual factors, and technology (D) is a
healthcare resource, not a social determinant.
10. A nurse is advocating for a policy to increase funding for community health centers.
Which level of prevention does this represent?
[ ] A. Primary prevention
[ ] B. Secondary prevention
[ ] C. Tertiary prevention
[ ] D. Quaternary prevention
CORRECT: A. Primary prevention
Advocating for policies that improve access to care and prevent disease falls under primary prevention.
Secondary and tertiary prevention focus on early detection and rehabilitation, respectively, and quaternary
prevention addresses overmedicalization.
11. A nurse is preparing to administer a medication that is highly protein-bound to a
patient with severe hypoalbuminemia. Which pharmacokinetic consequence should the
nurse anticipate?
[ ] A. Decreased free drug concentration and reduced therapeutic effect
[ ] B. Increased free drug concentration and elevated risk of toxicity
HIGHP - Page 4 of 48
