— is her hair ?—It is blond.A. What colorB. WhatC. WhereD. How old

问题补充：

— is her hair ?

—It is blond.

A. What color

B. What

C. Where

D. How old

答案：

(答案→)A. What color

B. What

C. Where

D. How old

解析：考查疑问词。What colo什么颜色；What什么；Where在哪儿；How old多大。根据答语，金黄色的，可知上文提问颜色，故选A。