1

Set 2: Words in Context (Intermediate)

Explanation

Answer: B

PASSAGE

The biologist noted that while the species appears uniform to the naked eye, genetic analysis reveals a high degree of ______, indicating significant variation within the population.

Which choice completes the text with the most logical and precise word or phrase?

A. consistency
B. heterogeneity✓ Correct
C. homogeneity
D. stagnation

Detailed Explanation

The text contrasts 'uniform' appearance with 'significant variation'. 'Heterogeneity' refers to the quality or state of being diverse in character or content.

Key Evidence:

• "genetic analysis reveals"

• "significant variation"

Why others are wrong: A (Consistency implies uniformity.), C (Homogeneity means being all the same.), D (Stagnation means lack of activity or growth.).

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