Human beings are different from animals（）they can use language as a tool to communicate.A．in that B．for that C．in which D．on which为什么

Human beings are different from animals（）they can use language as a tool to communicate.
A．in that B．for that C．in which D．on which
为什么

B.for that = beacuse
整句话意思是人类不同与动物是因为他们能用语言交流．

b because相当于

b. 人有别于其他动物，这是因此 for that 人能够运用语言来交流。

B