In a proposition, which statement correctly describes quantifiers?

• A. Quantifiers indicate the source of evidence for a proposition.
• B. In a proposition, the quantifiers are the words All, Some, No, or Some..Not.
• C. Quantifiers determine the causal relation between subject and predicate.
• D. Quantifiers specify the mood of a proposition as indicative or interrogative.

Answer: (B)

Quantifiers in a proposition indicate how much of the subject term is included in the predicate term. In traditional logic, this is expressed with universal or particular forms using specific words: All, No, Some, and Some Not. These words map to the four standard forms: All S are P, No S are P, Some S are P, and Some S are not P. So the quantifier used in a proposition is precisely those words, which is why this option is correct.

Quantifiers aren’t about where evidence comes from, nor do they determine a causal relationship between subject and predicate. They also don’t define the mood as indicative or interrogative; mood in this framework refers to the affirmative/negative and universal/particular quality of the proposition, not question form.