We went to a period _______communications were very different in the rural areas.

题目

We went to a period _______communications were very different in the rural areas.
A which B whose C in which Dwith which 请问是填第三个吗,为什么,我是感觉的,整句话应该是并与从句吧,请细细的分析一下句子结构

答案

的确选C解析：从后面的‘in the rural areas’可以看出是对不同地方的沟通/通信的比较,所以应该填‘where’或‘in which’.