If 'all flowers fade' is TRUE, which of the following MUST also be true?
ASome flowers fade
BAll faded things were flowers
CSome non-fading things are flowers
DNo flowers fade
Answer & Solution
Correct answer: A. Some flowers fade
If 'all flowers fade' (a universal affirmative), then 'some flowers fade' (a particular affirmative) follows by subalternation in classical Aristotelian logic — provided at least one flower exists. The other options either contradict the premise or reverse it.
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