Final answer:
Anorexia nervosa is culture-bound because it is more prevalent in Western cultures due to the emphasis on thinness as an ideal beauty standard.
Step-by-step explanation:
The correct answer is option a) Anorexia nervosa is culture-bound because it is more prevalent in Western cultures. Anorexia nervosa is an eating disorder characterized by an intense fear of gaining weight and a distorted body image. This disorder is more commonly found in Western cultures where there is a greater emphasis on thinness as an ideal beauty standard. Factors such as media representation and societal pressures contribute to the prevalence of anorexia nervosa in these cultures.