The correct option is C Both men and women used to plait their hair in the past.
The passage mentions that in the past, men and women used to plait their hair as it was the easiest way of keeping their hair out of the way before haircutting and hairdressing became common and popular. So, the best option is option B. Option D is incorrect as it is only mentioned that plaiting was associated with those in an 'athletic pursuit', not athletics. Option C is incorrect as the braided hairstyle was only a 'fearless look' but did not guarantee victory. Option A is incorrect since there is no evidence in the passage that suggests that modern athletes, in general, plait their hair.