Punctuation Practice Test

A student is revising an essay about a city park and wants to add a nonessential detail about the pond. The sentence reads, “The pond_______ which was restored last year, now supports frogs and dragonflies,” and the student wants punctuation that correctly sets off the nonrestrictive clause. The sentence should remain one complete, clear statement.

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

The editor praised the report’s clarity but suggested one change _______ the opening paragraph should define the key term before introducing the debate, because readers may not share the same background knowledge.