LSAT Explanation PT 41, S1, Q7: Two things are true of all

LSAT Question Stem

If all of the statements above are true, then which one of the following must be false? 

Logical Reasoning Question Type

This is a Must Be False question. 

Correct Answer

The correct answer to this question is A. 

LSAT Question Complete Explanation

This LSAT problem is a Must Be False (MBF) question. We are asked to identify the answer choice that must be false based on the information provided in the passage.

The passage provides us with two conditional statements about immoral actions:

1. If an immoral action is performed in public, it offends public sensibilities.

Immoral & Public -> Offends Public

2. All immoral actions are accompanied by feelings of guilt.

Immoral -> Guilt

Let's analyze each answer choice to determine which one must be false based on these conditional statements:

a) Some immoral actions that are not performed in public are not accompanied by feelings of guilt.

According to the second statement in the passage, all immoral actions are accompanied by feelings of guilt. Therefore, it is impossible for any immoral action, whether performed in public or not, to not be accompanied by feelings of guilt. This answer choice must be false.

b) Immoral actions are wrong solely by virtue of being accompanied by feelings of guilt.

The passage does not provide enough information to disprove this statement. It is possible that the immorality of an action is determined by the presence of guilt. This answer choice could be true, so it is not the correct choice.

c) Some actions that offend public sensibilities if they are performed in public are not accompanied by feelings of guilt.

This statement could be true if the actions in question are not immoral. The passage only states that immoral actions offend public sensibilities and are accompanied by guilt. This answer choice is not the correct choice.

d) Some actions that are accompanied by feelings of guilt are not immoral, even if they frequently offend public sensibilities.

The passage does not provide enough information to disprove this statement. It is possible that some actions that are accompanied by guilt and offend public sensibilities are not immoral. This answer choice could be true, so it is not the correct choice.

e) Every action performed in public that is accompanied by feelings of guilt is immoral.

While this statement is not explicitly stated in the passage, it is possible based on the provided information. Therefore, this answer choice could be true and is not the correct choice.

Based on our analysis, the correct answer is (a) because it is the only statement that must be false according to the information provided in the passage.