Form, Structure, and Sense: Agreement and Usage

SAT Reading and Writing· difficulty 4/5

Charles ______ groundbreaking work on natural selection transformed the biological sciences in the nineteenth century.

Which choice completes the text so that it conforms to the conventions of Standard English?

Explanation

"Darwin" is a singular proper noun not ending in s. Add apostrophe + s for the possessive: "Darwin's groundbreaking work."

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