The one concern for parents and students is ______ if the student pursues their university education

The one concern for parents and students is ______ if the student pursues their university education in a foreign country, the student will not have the opportunity to establish social contacts in China

A.what

B.that

C.whether

D./

答案及解析： B

解析：

表语从句为陈述一个事实，故答案为B。