Logical reasoning PrepTest 118 · Section 1 · Question 24

Incorrect. This answer has a term shift from the conditional about playing an important part on the project, and the some statement about working on the project. It's possible to play an important role on a project without working on it—providing funding, or advice, or taking over work for those who are on the project, for example.

Incorrect. This answer is subtly different from the stimulus—where there was a some, then a none, and finally a some statement. This answer has an all premise, which results in the conditional being directly applied.

Correct. Argument or Facts:
Argument

Valid or Flawed:
Valid

Question Type:
Parallel Reasoning

Stimulus Summary:
Know that something hurts animals → not Engage in practice
Some park visitors engage in practices that hurt animals
Therefore: Some park visitors don't know that these practices hurt animals

Answer Anticipation:
The argument has a conditional, a some statement that triggers the contrapositive, and a some conclusion that validly reaches the necessary condition of the contrapositive.

Answer Explanation:
This answer follows the same pattern as the stimulus:
Eligible to vote → not Lives outside city
Some polled live outside city
Therefore: Some polled aren't eligible to vote
This answer matches the logic of the stimulus, so it's the correct answer.

Key Takeaway:
While not something that happens frequently, some Parallel Reasoning questions rely on eliminations based on how the conditionals are structured. Here, the difference between a conditional that spoke of "all/everyone" and "no one" was important to ruling out two answers and settling on the correct one.

Incorrect. This answer doesn't have a some premise, so it's a mismatch.

Incorrect. This answer is parallel to answer choice (B), which means we can rule it out (and (B), if you hadn't already on your first pass).