Which of the following descriptions best fits the Venn relationship between Mammals, Whales, and Birds?
Answer and explanation
Correct answer: C. All whales are mammals, and birds are disjoint from both
- Step 1: Biologically, whales are cetacean aquatic mammals, so the set of Whales is entirely contained within the set of Mammals.
- Step 2: Birds form a distinct taxonomic class (Aves) with no biological overlap with mammals.
Answer
All whales are mammals, and birds are disjoint from both.
Why not the others: Birds are not mammals; and whales do not merely intersect mammals, they are fully subsumed within mammals.
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