First it was jogging. then aerobics. not too long ago, Americans ___ race walking.

a. invent肌沪冠疚攉狡圭挟氦锚ed b. created c. discovered d. found out 请问选择哪一个，请解释下原因，谢谢

我觉得是因为jogging 慢跑，race walking竞走，这样的运动是人们本来就会，本来就存在的，所以不需要人发明或者创造 像snowboarding 滑雪 之类人为创造的运动，才用inve肌沪冠疚攉狡圭挟氦锚nt ，发明

First it was jogging. then aerobics. not too long ago, Americans ___ race walking. 个人觉得是created 对吗 先确定下答案

你好！ b. created -------------创建，创立 a. invented ------发明 c. discovered --------------发现 d. found out------------肌沪冠疚攉狡圭挟氦锚------发现 仅代表个人观点，不喜勿喷，谢谢。