Question

－Drive carefully so that everyone can enjoy a long life.
－Yes, I agree with you.

A．in order that

B．in order to

C．unless

D．whether

Answer 1

A

划线部分so that是以便，为的是，引导目的状语从句。in order that  为了，后面跟句子；in order to为了，后跟动词原形；unless如果不，和so that意思不同，不能替换；whether是否，也不能替换。所以选A。