The disorder characterized by a persistent and irrational fear of gaining weight, leading to restricted food intake and excessive concerns about body shape and weight is known as:
A. Bulimia nervosa
B. Binge-eating disorder
C. Anorexia nervosa
D. Avoidant/restrictive food intake disorder
Anorexia nervosa involves a persistent and irrational fear of gaining weight, leading to restricted food intake.