Nowadays more and more people are advised to arrange for insurance they or their family m

问题补充：

Nowadays more and more people are advised to arrange for insurance they or their family members need medical treatment.

A so that B. in order that

C in case D no wonder that

答案：

解析：现在建议越来越多的人买医疗保险以防止他们或家人不时之需。这里的in case意为“免得，以防万一”，引导目的状语从句。so that和in order that一样用法但是不合题意，no wonder that意为“难怪…”不合题意。