Given below are two statements
Statement I: To obvert a proposition, we change its quality and replace the predicate term with its complement.
Statement II: Obversion is valid for any standard form categorical proposition.
In light of the above statements, choose the correct answer from the options given below

Correct option is A

Statement I: True.
· Obversion involves two steps:
1. Changing the quality of the proposition (affirmative to negative or negative to affirmative).
2. Replacing the predicate with its complement (e.g., "honest" becomes "not honest"). This is the correct process for obversion in categorical logic.
Statement II: True.
· Obversion is valid for all four types of standard-form categorical propositions (A, E, I, O):
· A (Universal Affirmative): "All S are P" → "No S are non-P."
· E (Universal Negative): "No S are P" → "All S are non-P."
· I (Particular Affirmative): "Some S are P" → "Some S are not non-P."
· O (Particular Negative): "Some S are not P" → "Some S are non-P."
Information Booster 1. Obversion Rules:
· Change the quality (affirmative ↔ negative).
· Replace the predicate with its complement.
2. Applicability: Obversion is valid for all standard forms (A, E, I, O).
3. Examples:
· A: "All dogs are mammals" → "No dogs are non-mammals."
· E: "No cats are dogs" → "All cats are non-dogs."
· I: "Some birds are flying creatures" → "Some birds are not non-flying creatures."
· O: "Some humans are not kind" → "Some humans are non-kind."
4. Logical Equivalence: Obversion maintains logical equivalence with the original proposition.