It was in 1880 that the sport really began to take shape, thanks almost exclusively to one person. ________________was a student at Yale from and an avid athlete, playing on Yale's football team until 1882. Even after he left Yale as a student, he continued to coach the team and be a regular presence at every rules convention held until his death. 
 a
 Tom Brady
 b
 Irving Reid
 c
 Walter Camp
 d
 Mitty Scott