The Correct answer is B.
Explanation
The error in this sentence occurs at (B), where there is noun-noun disagreement. The singular “a member” does not agree with the plural “trees.”
Writing > Identifying Sentence Errors
The following sentence contains either a single error or no error at all. If the sentence contains an error, select the one underlined part that must be changed to make the sentence correct. If the sentence contains no error, select choice E.
Cola nuts are the caffeine-rich nuts of Cola auminata and Cola nitida, evergreen forest trees that are (A)native to tropical West Africa and that are (B)a member (C)of the same botanical family (D)as cocas. (E)No error
