With the Internet widely used a(an)change has taken place in the way people communicate

问题补充：

With the Internet widely used, a(an)change has taken place in the way people communicate with one another.

A. approximate

B. independent

C. fundamental

D. Agricultural

答案：

A. approximate

B. independent

(答案→)C. fundamental

D. Agricultural

解析：考查形容词。A. approximate大约的；B. independent独立的；C. fundamental根本的；D. Agricultural农业的。句意：随着网络的广泛使用，人们以另外一种交际方式的变化发生了根本的变化。故C正确。