In a sub-alternation relation, if the particular proposition is true, then the truth value of the universal is

ATrue

BFalse

CBoth true and false

DDoubtful ✓ Correct

Correct answer: (D) Doubtful

Explanation

In sub-alternation, if the particular is true, the universal is doubtful.

A true particular does not guarantee the whole class.

Some S being P leaves open whether all S are P.

The universal may then be either true or false.

Truth does not flow upward, so the universal stays undetermined.

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