Final answer:
The successful coach who adopted a sport science approach in his coaching is "Doc" Counsilman. Therefore, the correct option is 1.
Step-by-step explanation:
The successful coach who is noted for adopting a sport science approach in his coaching is "Doc" Counsilman. He was a legendary swimming coach who revolutionized the sport with his scientific methods and emphasis on technique. Counsilman's coaching techniques focused on using data, research, and scientific principles to improve performance, making him a pioneer in the field of sports science.