LSAT 10 | Section 1 | Logical Reasoning: Q22

LR Question 22 Explanation

QUESTION TEXT: No one knows what purpose, if any, dreams serve…

QUESTION TYPE: Most Strongly Supported

ANALYSIS: If you don’t dream, and therefore don’t erase parasitic connections, you must either:

• Have a clogged memory, or
• Have a larger memory to compensate

The anteater has a large brain, so that fits prediction #2.

___________

1. This goes beyond the scope. We weren’t told anything about brain size vs. sleep time in general.
2. Too strong. The stimulus never says dreams eliminate all parasitic connections, just that they prevent them from clogging memory.
3. CORRECT. If dreaming clears out parasitic connections, then preventing dreaming would allow those associations to accumulate and clog memory. That would impair memory function, just as the hypothesis suggests.
4. Irrelevant. This talks about how dreams are described, not what they do. The stimulus doesn’t say dreams must only consist of meaningful connections, nor that describing them as meaningful is wrong.
5. Too strong. The stimulus says the anteater is the only mammal that doesn’t have REM sleep. It says nothing about all animals.