WGU D402
Pre Assessment Community and Public Health 2026|2027
High-Yield 150 Questions and Answers
1. What is the primary focus of public health?
A. Treating individual illnesses after symptoms appear
B. Improving the health of populations through prevention and health promotion
C. Providing surgical treatment to hospitalized patients
D. Managing individual medication regimens
Correct Answer: B
Explanation: Public health focuses on populations rather than only individual
patients. Its major goals include preventing disease, promoting health, protecting
communities, and addressing conditions that influence population health.
2. Which statement best describes community health?
A. Care provided exclusively in acute-care hospitals
B. Health services directed toward improving the health of people within a defined
community
C. Treatment provided only to people with chronic diseases
D. Care provided only through private physicians
Correct Answer: B
Explanation: Community health considers the health needs of people living in a
particular geographic, cultural, or social community. Interventions may address
prevention, education, access, environment, and social conditions.
3. Which historical development most strongly contributed to modern infectious-
disease control?
A. Development of cosmetic surgery
B. Germ theory
C. Development of electronic health records
D. Introduction of MRI technology
Correct Answer: B
Explanation: Germ theory established that microorganisms can cause disease. This
understanding contributed to sanitation, sterilization, vaccination, infection-control
practices, and other public health interventions.
4. What was one major contribution of improved sanitation to public health?
,A. Increased transmission of waterborne disease
B. Reduction of diseases associated with contaminated water and waste
C. Elimination of all chronic diseases
D. Elimination of the need for vaccination
Correct Answer: B
Explanation: Clean water and appropriate waste disposal reduce exposure to
pathogens. Sanitation therefore became one of the foundational public health
interventions.
5. What is the primary purpose of pasteurization?
A. Increase the sugar content of food
B. Destroy harmful microorganisms through controlled heating
C. Freeze food immediately
D. Remove all nutrients from food
Correct Answer: B
Explanation: Pasteurization uses controlled heat to reduce harmful microorganisms
in foods and beverages. It helps decrease foodborne illness while generally
preserving nutritional quality.
6. Which development had a major effect on the treatment of bacterial infections
during the 20th century?
A. Penicillin
B. Ultrasound
C. Insulin pumps
D. CT scanning
Correct Answer: A
Explanation: Penicillin was a major breakthrough in treating bacterial infections.
Antibiotics subsequently transformed the management of many infectious diseases.
7. What is herd immunity?
A. Immunity acquired only after hospitalization
B. Protection that occurs when a sufficiently large proportion of a population is
immune to an infectious disease
C. Immunity that occurs only in healthcare workers
D. Protection caused by antibiotics
Correct Answer: B
,Explanation: When enough people in a population are immune, transmission of
certain infections becomes more difficult. This can indirectly protect people who
cannot be vaccinated or who do not develop adequate immunity.
8. Which activity is most consistent with the population-health approach?
A. Treating one patient's postoperative pain
B. Developing a community vaccination campaign
C. Adjusting one patient's insulin dose
D. Changing one patient's wound dressing
Correct Answer: B
Explanation: A vaccination campaign addresses disease prevention across a
population. Population health seeks to improve outcomes for groups rather than
focusing exclusively on individual treatment.
9. Which is a major goal of public health?
A. Increase healthcare costs
B. Prevent disease and injury
C. Eliminate the need for healthcare providers
D. Treat only rare diseases
Correct Answer: B
Explanation: Prevention of disease and injury is central to public health. Public
health also promotes health, protects populations, improves environments, and
addresses health inequities.
10. Which statement distinguishes public health from medical care?
A. Public health never uses scientific evidence
B. Medical care is population-focused while public health is always individual-
focused
C. Public health emphasizes prevention and population-level interventions
D. Public health does not address infectious diseases
Correct Answer: C
Explanation: Medical care commonly focuses on diagnosing and treating individuals.
Public health emphasizes population-level prevention, protection, surveillance,
education, and policy.
Section 2: Community Health Nursing
11. Which role involves helping individuals or groups obtain needed healthcare
services?
, A. Advocate
B. Laboratory technician
C. Surgeon
D. Pharmacologist
Correct Answer: A
Explanation: Advocacy involves supporting individuals and populations in obtaining
appropriate resources and services. A community health nurse may advocate for
access, safety, equitable treatment, and needed community resources.
12. Which nursing role focuses primarily on helping people understand health
information?
A. Educator
B. Billing specialist
C. Registrar
D. Radiology technician
Correct Answer: A
Explanation: Community health nurses frequently provide health education.
Education may address nutrition, disease prevention, medication use, screening,
safety, and healthy behaviors.
13. What is the primary purpose of case management?
A. Increase unnecessary referrals
B. Coordinate services to meet an individual's or population's healthcare needs
C. Replace all healthcare providers
D. Provide only emergency treatment
Correct Answer: B
Explanation: Case management coordinates services among providers and
organizations. It can improve continuity, access, resource utilization, and outcomes.
14. Which action demonstrates the community health nurse role of collaborator?
A. Working with schools and local organizations to reduce childhood obesity
B. Refusing to communicate with other professionals
C. Providing care without community input
D. Ignoring available community resources
Correct Answer: A
Explanation: Collaboration involves working with individuals, organizations,
agencies, and professionals toward shared health goals. Community problems often
Pre Assessment Community and Public Health 2026|2027
High-Yield 150 Questions and Answers
1. What is the primary focus of public health?
A. Treating individual illnesses after symptoms appear
B. Improving the health of populations through prevention and health promotion
C. Providing surgical treatment to hospitalized patients
D. Managing individual medication regimens
Correct Answer: B
Explanation: Public health focuses on populations rather than only individual
patients. Its major goals include preventing disease, promoting health, protecting
communities, and addressing conditions that influence population health.
2. Which statement best describes community health?
A. Care provided exclusively in acute-care hospitals
B. Health services directed toward improving the health of people within a defined
community
C. Treatment provided only to people with chronic diseases
D. Care provided only through private physicians
Correct Answer: B
Explanation: Community health considers the health needs of people living in a
particular geographic, cultural, or social community. Interventions may address
prevention, education, access, environment, and social conditions.
3. Which historical development most strongly contributed to modern infectious-
disease control?
A. Development of cosmetic surgery
B. Germ theory
C. Development of electronic health records
D. Introduction of MRI technology
Correct Answer: B
Explanation: Germ theory established that microorganisms can cause disease. This
understanding contributed to sanitation, sterilization, vaccination, infection-control
practices, and other public health interventions.
4. What was one major contribution of improved sanitation to public health?
,A. Increased transmission of waterborne disease
B. Reduction of diseases associated with contaminated water and waste
C. Elimination of all chronic diseases
D. Elimination of the need for vaccination
Correct Answer: B
Explanation: Clean water and appropriate waste disposal reduce exposure to
pathogens. Sanitation therefore became one of the foundational public health
interventions.
5. What is the primary purpose of pasteurization?
A. Increase the sugar content of food
B. Destroy harmful microorganisms through controlled heating
C. Freeze food immediately
D. Remove all nutrients from food
Correct Answer: B
Explanation: Pasteurization uses controlled heat to reduce harmful microorganisms
in foods and beverages. It helps decrease foodborne illness while generally
preserving nutritional quality.
6. Which development had a major effect on the treatment of bacterial infections
during the 20th century?
A. Penicillin
B. Ultrasound
C. Insulin pumps
D. CT scanning
Correct Answer: A
Explanation: Penicillin was a major breakthrough in treating bacterial infections.
Antibiotics subsequently transformed the management of many infectious diseases.
7. What is herd immunity?
A. Immunity acquired only after hospitalization
B. Protection that occurs when a sufficiently large proportion of a population is
immune to an infectious disease
C. Immunity that occurs only in healthcare workers
D. Protection caused by antibiotics
Correct Answer: B
,Explanation: When enough people in a population are immune, transmission of
certain infections becomes more difficult. This can indirectly protect people who
cannot be vaccinated or who do not develop adequate immunity.
8. Which activity is most consistent with the population-health approach?
A. Treating one patient's postoperative pain
B. Developing a community vaccination campaign
C. Adjusting one patient's insulin dose
D. Changing one patient's wound dressing
Correct Answer: B
Explanation: A vaccination campaign addresses disease prevention across a
population. Population health seeks to improve outcomes for groups rather than
focusing exclusively on individual treatment.
9. Which is a major goal of public health?
A. Increase healthcare costs
B. Prevent disease and injury
C. Eliminate the need for healthcare providers
D. Treat only rare diseases
Correct Answer: B
Explanation: Prevention of disease and injury is central to public health. Public
health also promotes health, protects populations, improves environments, and
addresses health inequities.
10. Which statement distinguishes public health from medical care?
A. Public health never uses scientific evidence
B. Medical care is population-focused while public health is always individual-
focused
C. Public health emphasizes prevention and population-level interventions
D. Public health does not address infectious diseases
Correct Answer: C
Explanation: Medical care commonly focuses on diagnosing and treating individuals.
Public health emphasizes population-level prevention, protection, surveillance,
education, and policy.
Section 2: Community Health Nursing
11. Which role involves helping individuals or groups obtain needed healthcare
services?
, A. Advocate
B. Laboratory technician
C. Surgeon
D. Pharmacologist
Correct Answer: A
Explanation: Advocacy involves supporting individuals and populations in obtaining
appropriate resources and services. A community health nurse may advocate for
access, safety, equitable treatment, and needed community resources.
12. Which nursing role focuses primarily on helping people understand health
information?
A. Educator
B. Billing specialist
C. Registrar
D. Radiology technician
Correct Answer: A
Explanation: Community health nurses frequently provide health education.
Education may address nutrition, disease prevention, medication use, screening,
safety, and healthy behaviors.
13. What is the primary purpose of case management?
A. Increase unnecessary referrals
B. Coordinate services to meet an individual's or population's healthcare needs
C. Replace all healthcare providers
D. Provide only emergency treatment
Correct Answer: B
Explanation: Case management coordinates services among providers and
organizations. It can improve continuity, access, resource utilization, and outcomes.
14. Which action demonstrates the community health nurse role of collaborator?
A. Working with schools and local organizations to reduce childhood obesity
B. Refusing to communicate with other professionals
C. Providing care without community input
D. Ignoring available community resources
Correct Answer: A
Explanation: Collaboration involves working with individuals, organizations,
agencies, and professionals toward shared health goals. Community problems often
