Those successful deaf dancers think that dancing is an activity sight matters more than

问题补充：

Those successful deaf dancers think that dancing is an activity sight matters more than hearing.

A. when

B. whose

C. which

D. where

答案：

A. when

B. whose

C. which

(答案→)D. where

解析：where引导定语从句，修饰先行词activity。句意为：那些失聪的成功舞蹈演员们认为，舞蹈是一种让人看胜过让人听的活动。