请教一道英语单选,北大自主招生题!请说明具体原因.

问题描述:

请教一道英语单选,北大自主招生题!请说明具体原因.
It would be ( )a risk to let the child go to school by himself.
A.following B.passing C.running D.carrying

选c
run a risk冒风险 冒险的意思
整句话的意思是让孩子一个人去上学是有风险的