The number of sharks has fallen greatly in the past three years, so measures must be taken

The number of sharks has fallen greatly in the past three years, so measures must be taken to oppose sharks illegally.
A. people to hurt
B. people from hunting
C. people hurt
D. people’s hunting

A. people to hurtB. people from huntingC. people hurt(答案→)D. people’s hunting解析：oppose当反对、反抗讲时，后跟动名词或名词，不接不定时，故选D。

就是这个解释