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As we go HIGHER in the taxonomic hierarchy (species → kingdom):
AThe number of common characteristics among members INCREASES
BDifficulty decreases but characteristics decrease
CThe number of common characteristics among members DECREASES; the difficulty of determining relationships at the same level INCREASES
DBoth characteristics and difficulty stay the same
Answer & Solution
Correct answer: C. The number of common characteristics among members DECREASES; the difficulty of determining relationships at the same level INCREASES
Members of higher taxa share fewer common characters (broader category, more diverse membership) — and relationships between groups at the same higher level become harder to determine. Lower taxa = more shared features.
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