If you have some trouble ___the railway station,please ask the police for help. A finding B finding

If you have some trouble ___the railway station,please ask the police for help.
A finding B finding out C looking for Ddiscovering
为什么是A 求各个答案的区别。

A找到
B查明
C表示寻找的过程
D首次发现

finding 是找到 find out多用于找出答案神马的 look for是找，找这个动作，不一定要找到 discover是发现，发现什么东西呀神马的

have trouble (in) doing sth 做某事有困难 find强调找的动作 find out强调找得结果

finding in itself is enough. no need for ''out'' as in B; if the sentence is ''looking for'', then you'll be saying: if you are looking for the railway station. lastly, if you were discovering the station or any area, you don't need the police to help you :)