WGU D265 OBJECTIVE EXAMS QUESTIONS AND
ANSWERS|2026 UPDATES|WITH COMPLETE
SOLUTIONS
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DOMAIN 1: FOUNDATIONAL CONCEPTS (Questions 1-10)
1. Which of the following is a proposition?
A) Please close the door.
B) Is it raining outside?
C) The sky is blue.
D) Wow, what a beautiful sunset!
Correct Answer: C
Rationale: A proposition is a statement that can be true or false. "The sky is blue"
is a declarative statement with a truth value. Options A (command), B (question),
and D (exclamation) are non-propositional.
2. An inference is best defined as:
A) The final conclusion of an argument.
B) A statement that supports a conclusion.
C) A mental process of reasoning from premises to a conclusion.
D) A flaw in reasoning.
Correct Answer: C
,Rationale: An inference is the cognitive act of moving from accepted premises to a
new conclusion. It is the "leap" of logic you make. Option B describes a premise,
and D describes a fallacy.
3. Which statement is a non-proposition?
A) The Earth revolves around the Sun.
B) All bachelors are unmarried.
C) Stop running in the hallway.
D) The temperature is 72 degrees.
Correct Answer: C
Rationale: "Stop running in the hallway" is an imperative command, which cannot
be true or false. The other options are declarative statements that can be verified.
4. In the argument, "All mammals are warm-blooded. Whales are mammals.
Therefore, whales are warm-blooded," what is the conclusion?
A) All mammals are warm-blooded.
B) Whales are mammals.
C) Whales are warm-blooded.
D) Mammals are warm-blooded.
Correct Answer: C
Rationale: The conclusion is the statement that the arguer is trying to prove. The
first two sentences are premises providing support for the final claim.
5. Which of the following is a deductive argument?
A) Every swan I have seen is white, so all swans are white.
,B) If it rains, the ground gets wet. It rained. So, the ground is wet.
C) The engine is dirty, so the car won't start.
D) Most students passed, so John probably passed.
Correct Answer: B
Rationale: Deductive arguments aim for certainty. If the premises are true, the
conclusion *must* be true (Modus Ponens). Options A and D are inductive
(probabilistic). C is an explanation, not an argument.
6. An inductive argument aims to make the conclusion:
A) Certain.
B) Valid.
C) Sound.
D) Probable.
Correct Answer: D
Rationale: Inductive arguments deal in probabilities. They generalize from specific
instances, meaning the conclusion is likely but not guaranteed.
7. What does the "validity" of a deductive argument refer to?
A) Whether the premises are actually true in the real world.
B) Whether the conclusion is a true statement.
C) Whether the logical structure forces the conclusion to be true if the premises
are true.
D) Whether the arguer is being sincere.
Correct Answer: C
, Rationale: Validity is strictly about logical form. It ignores reality; it only asks: *If*
the premises are true, *must* the conclusion be true?
8. An argument is "sound" if:
A) It is valid and has all true premises.
B) It has a true conclusion.
C) It is strong and cogent.
D) It has at least one true premise.
Correct Answer: A
Rationale: Soundness is the gold standard for deductive arguments. It requires
both structural perfection (validity) and factual accuracy (true premises).
9. Which of the following is NOT a component of an argument?
A) Conclusion
B) Premises
C) Indicator words (e.g., therefore, since)
D) A rhetorical question
Correct Answer: D
Rationale: Arguments require declarative statements that assert facts. Rhetorical
questions lack a truth value and cannot function as premises or conclusions in a
strict logical sense.
10. An explanation differs from an argument because:
A) An explanation is always false.
ANSWERS|2026 UPDATES|WITH COMPLETE
SOLUTIONS
---
DOMAIN 1: FOUNDATIONAL CONCEPTS (Questions 1-10)
1. Which of the following is a proposition?
A) Please close the door.
B) Is it raining outside?
C) The sky is blue.
D) Wow, what a beautiful sunset!
Correct Answer: C
Rationale: A proposition is a statement that can be true or false. "The sky is blue"
is a declarative statement with a truth value. Options A (command), B (question),
and D (exclamation) are non-propositional.
2. An inference is best defined as:
A) The final conclusion of an argument.
B) A statement that supports a conclusion.
C) A mental process of reasoning from premises to a conclusion.
D) A flaw in reasoning.
Correct Answer: C
,Rationale: An inference is the cognitive act of moving from accepted premises to a
new conclusion. It is the "leap" of logic you make. Option B describes a premise,
and D describes a fallacy.
3. Which statement is a non-proposition?
A) The Earth revolves around the Sun.
B) All bachelors are unmarried.
C) Stop running in the hallway.
D) The temperature is 72 degrees.
Correct Answer: C
Rationale: "Stop running in the hallway" is an imperative command, which cannot
be true or false. The other options are declarative statements that can be verified.
4. In the argument, "All mammals are warm-blooded. Whales are mammals.
Therefore, whales are warm-blooded," what is the conclusion?
A) All mammals are warm-blooded.
B) Whales are mammals.
C) Whales are warm-blooded.
D) Mammals are warm-blooded.
Correct Answer: C
Rationale: The conclusion is the statement that the arguer is trying to prove. The
first two sentences are premises providing support for the final claim.
5. Which of the following is a deductive argument?
A) Every swan I have seen is white, so all swans are white.
,B) If it rains, the ground gets wet. It rained. So, the ground is wet.
C) The engine is dirty, so the car won't start.
D) Most students passed, so John probably passed.
Correct Answer: B
Rationale: Deductive arguments aim for certainty. If the premises are true, the
conclusion *must* be true (Modus Ponens). Options A and D are inductive
(probabilistic). C is an explanation, not an argument.
6. An inductive argument aims to make the conclusion:
A) Certain.
B) Valid.
C) Sound.
D) Probable.
Correct Answer: D
Rationale: Inductive arguments deal in probabilities. They generalize from specific
instances, meaning the conclusion is likely but not guaranteed.
7. What does the "validity" of a deductive argument refer to?
A) Whether the premises are actually true in the real world.
B) Whether the conclusion is a true statement.
C) Whether the logical structure forces the conclusion to be true if the premises
are true.
D) Whether the arguer is being sincere.
Correct Answer: C
, Rationale: Validity is strictly about logical form. It ignores reality; it only asks: *If*
the premises are true, *must* the conclusion be true?
8. An argument is "sound" if:
A) It is valid and has all true premises.
B) It has a true conclusion.
C) It is strong and cogent.
D) It has at least one true premise.
Correct Answer: A
Rationale: Soundness is the gold standard for deductive arguments. It requires
both structural perfection (validity) and factual accuracy (true premises).
9. Which of the following is NOT a component of an argument?
A) Conclusion
B) Premises
C) Indicator words (e.g., therefore, since)
D) A rhetorical question
Correct Answer: D
Rationale: Arguments require declarative statements that assert facts. Rhetorical
questions lack a truth value and cannot function as premises or conclusions in a
strict logical sense.
10. An explanation differs from an argument because:
A) An explanation is always false.
