Which of the following propositions is obverse of and logically equivalent to "Some men are honest"?

Correct option is B

Obversion is a logical process that transforms a categorical proposition by:
1. Changing the quality (affirmative to negative or vice versa).
2. Replacing the predicate with its complement.
For the given proposition "Some men are honest" (I type statement):
· The quality changes from affirmative to negative.
· "Honest" (the predicate) is replaced with its complement, "not dishonest."
Thus, the obverse of "Some men are honest" is "Some men are not dishonest," which is logically equivalent to the original proposition.
Information Booster 1. Obversion Rules:
· Works for all types of categorical propositions (A, E, I, O).
· Logical equivalence is maintained after the transformation.
2. Examples of Obversion:
· A: "All cats are animals" → "No cats are non-animals."
· E: "No dogs are cats" → "All dogs are non-cats."
· I: "Some birds are flying creatures" → "Some birds are not non-flying creatures."
· O: "Some humans are not kind" → "Some humans are non-kind."
3. Complement of a Term:
· Refers to everything that the term does not denote. For "honest," the complement is "not honest" (or "dishonest").