The conference has been held to discuss the effects of tourism the wildlife in the area.A

问题补充：

The conference has been held to discuss the effects of tourism the wildlife in the area.

A. in

B. on

C. at

D. with

答案：

A. in

(答案→)B. on

C. at

D. with

解析：本题考查介词搭配。“对……影响”短语为“the effect on...”。