The science of medicine progress has been rapid lately is perhaps the most important of

问题补充：

The science of medicine progress has been rapid lately is perhaps the most important of all the science.

A. which

B. in which

C. that

D. with which

答案：

A. which

(答案→)B. in which

C. that

D. with which

解析：“介词+关系代词” 引出其后的定语从句，which指先行词the science of medicine,in which即in the science of medicine。