单选题 Why does the writer think rope skipping also does good to one's eyes?

【正确答案】 C
【答案解析】[解析] 判断推理题。从文章第四段第二句话,When skipping the rope,one has to react quickly,which excites the brain as well as the eyes.可知,跳绳时会使大脑和眼睛兴奋,反应快速。所以正确的答案为C。