One advantage of playing the guitar is ______ it can give you a great deal of pleasure.

A.how

B.why

C.that

D.when

答案及解析： C

由句式结构可知此处为引导表语从句的连词辨析。由句式及句意可知从句部分结构完整、意义明确，所以该空格处应选择that。