The number of people who have access to their own cars sharply in the past decade. A. ros

问题补充：

The number of people, who have access to their own cars,sharply in the past decade.

A. rose

B. is rising

C. have risen

D. has risen

答案：

A. rose

B. is rising

C. have risen

(答案→)D. has risen

解析：the number of …的数量，加上名词作主语时，谓语动词用单数形式，根据时间“ in the past decade. ”应用现在完成时态，故选D。