It's best _and bring these items with you ,but in an emergency,you can get them as your destination.

问题描述:

It's best _and bring these items with you ,but in an emergency,you can get them as your destination.
C.to prepare
B.to be prepared 
不理解 说详细点

B
因为prepare是及物动词,其后要跟宾语,所以不选C