Identify the contextually incorrect word in the sentence: 'Scientists were surprised to find that the island's isolation had led to uniform species, since each valley hosted organisms found nowhere else.'

Answer and explanation

Correct answer: D. The word 'uniform'

  1. Step 1: The clause after 'since' says each valley hosts unique organisms, which describes diverse species.
  2. Step 2: 'Uniform' contradicts this; 'diverse' is the intended word.
Answer
The word 'uniform'.
Why not the others: 'isolation' explains the uniqueness, 'valley' is a place, and 'surprised' is consistent with a finding that seemed unexpected.

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