The heavy snow lasted for a week serious traffic confusion in the whole area.A. causing

问题补充：

The heavy snow lasted for a week, serious traffic confusion in the whole area.

A. causing

B. caused

C. having caused

D. being caused

答案：

(答案→)A. causing

B. caused

C. having caused

D. being caused

解析：考查现在分词做结果状语，句意：大雪持续了一个星期，导致在整个地区严重的交通混乱。选A。