Mark the letter A, B, C, or D on y...

Câu hỏi: Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that best combines each pair of sentences in the following questions.

A. Books help broaden the mind, but they provide a good source of entertainment.

B. Books help broaden the mind, and they provide a good source of entertainment.

C. Books help broaden the mind, for they provide a good source of entertainment.

D. Books help broaden the mind, or they provide a good source of entertainment.