A deductive argument is sound if and only if it is

AValid and all its premises are true ✓ Correct

BInvalid and all its premises are true

CValid and one of its premises is false

DValid and its conclusion is false

Correct answer: (A) Valid and all its premises are true

Explanation

A deductive argument is sound if and only if it is valid and all its premises are true.

Validity ensures the conclusion follows necessarily from the premises.

True premises then feed that valid form actually true starting points.

Only the pairing of a valid form with wholly true premises secures a true conclusion.

Lacking either condition, the argument fails to be sound.

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