Answer:
Yes, the correct answer is sport psychologist having specialization in clinical sport psychology can treat someone with eating disorder.
Explanation:
Scientific study to get the knowledge of people and their behaviors in sport and exercise and practical application of that knowledge is sport and exercise psychology. There are two specialization in it : -clinical sports psychologists and -educational sports psychology specialists.
Clinical sports psychologists is deal with:
an extensive training in psychology
detect/treat individuals with emotional disorders
eating disorders/substance abuse