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Problem 5 - Olympiad

All mammals are warm-blooded. All bats are mammals. What can be concluded?

A. All bats are warm-blooded.B. No bats are warm-blooded.C. Some warm-blooded are bats.D. All warm-blooded are bats.

Correct: A

Universals in premises (All A is B, All C is A) necessitate the conclusion 'All C is B.' Since bats are mammals and mammals are warm-blooded, bats are warm-blooded. Other options misstate or invert the logic.