Logical reasoning PrepTest 149 · Section 3 · Question 10

Incorrect. An animal could be an ancestor to an animal with a trait or behavior that it doesn't share. It's possible the Tiktaalik lived exclusively in water, and species that evolved from it moved to land.

Incorrect. There's no language strong enough to support that the fingers were the only significant evolution in the Tiktaalik.

Incorrect. While the Tiktaalik is noted as being an ancestor to many land animals, it may also be ancestor to fish species (they may have devolved away from having fingers).

Incorrect. There's no discussion of fish moving on land, so this answer is unsupported.

Correct. Argument or Facts:
Argument

Valid or Flawed:
Flawed

Question Type:
Must Be True

Stimulus Summary:
Tiktaalik are prehistoric fish with fingers. Prehistoric fish were all weird so the Tiktaalik wouldn't have stood out, but they proved to be important evolutionarily.

Answer Anticipation:
There are a few elements in this Must Be True stimulus that we can look to for our anticipation because they fall into categories of statements that tend to lead to inferences.

Noting that the Tiktaalik is "the earliest" known example of an animal with fingers is a strong comparison—as far as we know, it had fingers before anything else. The stimulus also compares the Tiktaalik to other fish—it wouldn't have stood out because they were all unusual. And we finally get a bit of an unexpected statement—this fish evolved into land animals.

This is a bit of a mishmash of information and it's unclear what inference can be drawn from it, but noting these elements should help us when we see an answer that deals in these concepts.

Answer Explanation:
This answer is a bit of a generalization from the stimulus. The Tiktaalik is noted as not standing out from other fish at the time while eventually proving to be important evolutionarily, thus supporting this answer.

Key Takeaway:
Sometimes, it's more important to understand the important information in a Must Be True question than it is to have a specific anticipation. Don't force yourself to come up with an anticipation if you're not seeing one—head to the answers and find an answer that's related to the important statements you identified.