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Category - SAT Writing
Choose the answer which best rewords the italicized portion. If you think the original wording is best, choose option A.
Pollution, population growth, and wasteful irrigation practices they are contributing to a worldwide water shortage.
Answer: B - The best choice is “are contributing” “Are contributing” indicates the present continuous form, which expresses something that is currently happening. The pronoun “they” is unnecessary and affects the sentence’s clarity. Since the factors causing water shortages are ongoing, past tense forms of verbs are inappropriate.