Logical reasoning PrepTest 144 · Section 3 · Question 8

Incorrect. The stimulus establishes that cream whipped without enough air intake becomes thick and velvety, so there's at least one situation where this happens. However, we can't say that this is "generally" what happens when cream is whipped ineffectively—there could be many other ineffective ways to whip cream (say, with a bunch of wet spaghetti) that could result in other textures (that spaghetti will probably leave you with very liquidy and bad-tasting cream!).

Correct. Argument or Facts:
Facts

Question Type:
Must Be True

Stimulus Summary:
Whipping cream in a blender doesn't have enough air intake so you end up with a thicker substance. Attachments can help but not fix this problem.

Answer Anticipation:
This argument has two key elements to it that we see repeatedly used to support answers in Must Be True questions—causality and comparisons.

The argument establishes that a lack of air intake causes whipped cream to take on a thick, velvety texture rather than the fluffy texture of regular whipped cream. This is both a comparison and a statement of what caused that comparison, so there's a good chance that the correct answer will derive from these relationships.

Answer Explanation:
The stimulus establishes that making whipped cream with a blender results in a weird substance "rather than" regular whipped cream. It also states that a special attachment "cannot fully compensate" for "poor" air intake. Together, these establish that the special attachment can't completely fix the problem that causes a blender to be ineffective at making whipped cream, so this is the correct answer.

Key Takeaway:
Be wary of extreme language in Must Be True answer choices. Here, (C) was a tempting answer, but it's very unlikely that a stimulus will allow you to support an answer about what will "always" happen.

Incorrect. This answer is tempting because it says that the special attachment can compensate somewhat, thus suggesting that using it will make a substance that's closer to true whipped cream than when the attachment on the blender isn't used. However, this answer is too strong in saying that this is "always" the result—especially since the stimulus states the attachment "can" help, not that it always helps. It's possible, under certain circumstances, the attachment doesn't do much at all, or it introduces a new problem that results in a less fluffy substance.

Incorrect. This is one possible way that an attachment could work, but it's not the only one, so it isn't supported. For example, an attachment might work by increasing airflow into the blender.

Incorrect. The stimulus doesn't discuss how common different methods of making whipped cream are. It's possible that most attempts to make whipped cream are unsuccessful, resulting in a thick, velvety substance (that, honestly, still sounds delicious).