During what was supposed to be a serious lecture on _________ Professor Higgins inserted several puns that caused the entire auditorium to erupt in laughter.

2
writing

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

A

economics

B

economics;

C

economics.

D

economics,

Correct Answer: D

Choice D is the best answer. The comma correctly separates the long introductory prepositional phrase from the main subject "Professor Higgins."

Choice A is incorrect because it lacks the necessary pause between the phrase and the subject. Choice B is incorrect because a semicolon separates independent clauses. Choice C is incorrect because the period creates a fragment.