Choose the answer which best rewords the italicized portion. If you think the original wording is best, choose option A.
The trees provide shelter to monarch butterflies they are also essential for the communities that surround the forests.

Question

Quizplus · Accepted Answer

The best choice is "butterflies, and they are also essential."
The sentence, in its original form, contains two independent clauses. Semicolons are appropriate for two closely related independent clauses; however, a comma is the best form of punctuation to insert before a coordinating conjunction.

Choose the Answer Which Best Rewords the Italicized Portion