Identify the sentence that correctly distinguishes between 'affect' and 'effect':

Answer and explanation

Correct answer: D. Drought directly affects regional harvest yields and produces an effect on prices.

  1. Step 1: In general academic usage, 'affect' functions as a verb meaning 'to influence or produce a change in'.
  2. Step 2: 'Effect' functions as a noun meaning 'a result or outcome of a cause'.
  3. Step 3: In the correct sentence, 'affect' is the active verb modifying precipitation patterns, and 'effect' is the noun following the indefinite article 'a measurable'.
Answer
Rising global temperatures directly affect regional precipitation patterns and produce a measurable effect on agricultural yield.
Why not the others: 'Rising global temperatures directly effect regional precipitation patterns...' incorrectly uses 'effect' as a verb and 'affect' as a noun; '...produce a measurable affect' incorrectly uses 'affect' as a noun; '...directly effect regional precipitation patterns' misuses 'effect' as the verb meaning to influence.

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