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LSAT Explanations › PrepTest 105 › Logical Reasoning › Section 4 › Question 17

LSAT 105 | Section 4 | Logical Reasoning: Q17

PT105.S4.Q17

LSAT Preptest 105 explanations

LR Question 17 Explanation

QUESTION TEXT: Everyone who is excessively generous …

QUESTION TYPE: Must Be True

FACTS:

  1. Everyone who is excessively generous isn’t levelheaded.
  2. No one who is levelheaded is bold.

ANALYSIS: This is a very short and straightforward stimulus. Let’s diagram it:

  1. Excessively Generous → NOT Levelheaded
    Levelheaded → NOT Excessively Generous
  1. Levelheaded → NOT Bold
    Bold → NOT Levelheaded

Levelheaded is connected to both of the terms, and the other two are not connected to each other. Since we want something that combines fact 1 and 2, we have to focus on what happens if you’re levelheaded.

The only thing we can infer is: If someone is levelheaded, they cannot be bold and they also cannot be excessively generous.

___________

  1. This says: Excessively Generous → NOT Bold. We have no link between those two terms, so we don’t know this.
  2. This says: If NOT Bold → Excessively Generous. We have no rule whatsoever about people who are not bold.
  3. This is actually the exact same as B. It also says: If NOT Bold → Excessively Generous. Again, we don’t know anything about people who aren’t bold.
  4. CORRECT. This is what we can infer by combining Fact 1 and 2. If Levelheaded → NOT Bold and NOT Excessively Generous.
  5. This says: If NOT Levelheaded → Bold or Excessively Generous. It treats boldness and excessive generosity as the only ways to be non-levelheaded. The stimulus never says that. Someone could be non-levelheaded for entirely different reasons.
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More Resources for Must Be True Questions

  • Conditional Reasoning Article: Learn about conditional statements on the LSAT.
  • LR Diagrams Guide: Learn how to draw LR diagrams.
  • Intro to Conditional Reasoning: This intro course lesson covers conditional reasoning basics.
  • Intro Course lesson: This intro course lesson covers Must Be True questions.
  • Mastery Seminar lesson: This LR Mastery seminar lesson covers must be true questions.
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