If 'all philosophers are rationalists' and 'Socrates is a philosopher', then which of the given conclusions follow?

Correct option is D

Given Statements:
All philosophers are rationalists.
This means that every philosopher belongs to the group of rationalists.
Socrates is a philosopher.
This means that Socrates is included in the group of philosophers.

Logical Analysis:
From statement 1, if all philosophers are rationalists, and from statement 2, Socrates is a philosopher, it logically follows that Socrates is also a rationalist because he belongs to the group of philosophers, which is a subset of rationalists.

Testing the Options:
A. All rationalists are philosophers
Incorrect. The statement does not imply that all rationalists are philosophers. It only says all philosophers are rationalists.

B. No philosophers are rationalists
Incorrect. This directly contradicts the given statement that all philosophers are rationalists.

C. Socrates is not a rationalist
Incorrect. This contradicts the logical conclusion derived from the given statements.

D. Socrates is a rationalist
Correct. This conclusion logically follows from the given statements.

Conclusion:
The correct answer is: D. Socrates is a rationalist.