Correct Answer: A
Explanation:
Choice A is the best answer because it provides the correct punctuation for
the dependent clause that begins with the phrase “such as.”
Choices B, C, and D are incorrect because each presents punctuation that
deviates from the standard way of punctuating the phrase “such as.” When
“such as” is a part of a nonrestrictive clause, as it is here, only one comma is
needed to separate it from the main independent clause.