d) all of these answers are correct
Explanation:
A person is said to an athlete if he/she is proficient in one or more sports that involve physical strength, speed or endurance. Training of the body and mind of the athlete for a specific sport is known as athletic training. Athletic training is different from personal training. The athlete is trained by his/her trainer to participate in the sport of their own choice.
Athletes and coaches believe that exercise-induced muscle cramps in a single muscle results dehydration and blood electrolyte imbalance.