Logical reasoning PrepTest 130 · Section 4 · Question 22

Incorrect. The first conditional here has the AND term in the necessary condition side, so we can rule it out.

Incorrect. This argument has an illegal reversal, but it doesn't establish one of the sufficient conditions as a premise, and it thus doesn't match the stimulus.

Correct. Argument or Facts:
Argument

Valid or Flawed:
Flawed

Question Type:
Flawed Parallel Reasoning

Stimulus Summary:
Well-publicized AND Author established → Successful book tour
Julia—Author established AND Successful book tour
Therefore: Julia—Well-publicized (book tour)

Answer Anticipation:
While there's an extra term involved here, the argument itself is an illegal reversal—it treats the establishment of the necessary condition (Successful book tour) to guarantee (one of the two) sufficient condition(s), with the other condition being established as a premise. The correct answer should follow the same pattern:

A AND B → C
B AND C
Therefore: A

Answer Explanation:
Shade AND Watered more than twice weekly → Die
Shade AND Die
Therefore: Watered more than twice weekly
Same illegal reversal with the second sufficient condition established in a premise, so this is our answer.

Key Takeaway:
Practice your conditionals. This question could easily eat up time right towards the end of the section when you can least afford it, but being able to diagram out conditionals quickly can make this a point you pick up in a timely manner.

Incorrect. This argument is a valid application of a conditional statement, so it can't be correct.

Incorrect. This argument is also a valid application of a conditional statement, so it can't be correct.