Universal affirmative form – UGC NET Question

A universal affirmative proposition has the standard logical form “All S are P”. It combines universal quantity with affirmative quality by stating that every member of the subject class is included in the predicate class. In traditional logic, this is known as an A-type proposition. Therefore the proposition described in the stem is a universal affirmative.

Option A:
Option A is correct because universal affirmative captures both key features of the proposition: it talks about all members of the subject and it affirms a positive relation to the predicate. This terminology is standard in the study of categorical logic.

Option B:
Option B, universal negative, would state that no members of the subject class belong to the predicate class, as in “No S are P”. This directly contradicts the claim in the stem and so cannot be right.

Option C:
Option C, particular affirmative, asserts that at least one member of the subject class belongs to the predicate class, usually phrased as “Some S are P”. It does not talk about all members and therefore does not match the description.

Option D:
Option D, particular negative, states that some S are not P, which changes both the quantity and quality of the proposition compared to the universal affirmative. Hence it is not appropriate here.