Question

Choose the set of three statements which are most logically related:
Statements:
A. No lunatics are fit to serve on a jury.
B. Everyone who is sane can do logic.
C. None of your sons can do logic.
D. Some who can do logic are fit to serve on a jury.
E. All who can do logic are fit to serve on a jury.
F. Everyone who is sane is fit to serve on a jury.

• A.
• B.
• C.
• D.

Hint:

If one statement is a broader universal and another is a weaker existential of the same idea, they are usually consistent in the same set.

Answer 1

The Correct Option is A

Take B (“Everyone who is sane can do logic”), D (“Some who can do logic are fit to serve on a jury”), and E (“All who can do logic are fit to serve on a jury”):
- From B and E: If all sane people can do logic, and all who can do logic are fit for jury duty, then all sane people are fit for jury duty.
- D is a weaker version of E (some who can do logic are fit), so it is automatically true if E is true.
- The three are consistent and connected: B provides the first link (sane → can do logic), E provides the second link (can do logic → fit for jury), and D fits without contradiction.