LSAT 159 | Section 3 | Logical Reasoning: Q13

LR Question 13 Explanation

QUESTION TEXT: Every human’s brain contains a mental representation of the …

QUESTION TYPE: Identify the Conclusion

CONCLUSION: The brain’s representation of the world necessarily leaves out many details.

REASONING: An object can’t fully represent something bigger and more complicated than itself. The world is much bigger and more complicated than the brain.

ANALYSIS: The first sentence is just a fact. The conclusion comes in the second sentence, and then the rest of the argument gives reasons why the brain leaves out a lot of detail (the world is complex, and no object can perfectly represent something larger and more complex than itself).

When identifying a conclusion, ask yourself whether the statement supports the other statements, or whether it is supported by the other statements. In this case it’s the latter.

___________

1. CORRECT. This is the conclusion. See the analysis above.
2. This is true, but it’s given as evidence/premise, not something the author is trying to prove.
3. Like B, this is one of the premises of the argument. It supports the conclusion, but it’s not the actual conclusion.
4. That’s just a fact that the argument starts off with.
5. Entity is too broad. The argument just said object. But again, this is just one of the premises of the argument.