[求助]885sec16-09

9.     Studies show that young people with higher-than-average blood pressure and their families have a history of high blood pressure are more likely than others to develop a severe form of the condition.

(A) and their families have a history of high blood pressure

(B) whose families have a history of high blood pressure

(C) and a history of high blood pressure runs in the family

(D) whose families have a history of high blood pressure running in them（B）

(E) with a history of high blood pressure running in their family

C错误的原因是and前后不对称。但是当时我觉得and后省略了with，现在想来，是不是with是不可省的？

不错。

而且即使不考虑这个，将c改成你想要的样子，逻辑意思也有问题。

with a history of high blood pressure in the family