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

Question

Of the four bridges across the river, the one ____ is the oldest.

Accepted Answer

A. built in 1790. "built in 1790" identifies which of the four bridges is meant, so it is restrictive and takes no commas.

Answer

B. built in 1790, — A single comma cuts the subject "the one built in 1790" from its verb.

Answer

C. , built in 1790, — Paired commas make the phrase nonessential, but without it "the one" has no meaning.

Answer

D. , built in 1790 — One comma opens a nonessential phrase that is never closed.

Standard English Conventions practice question