Which of the following is the best way to treat anorexia?

Cognitive behavioral therapy

because health skills are tools and strategies and also practical skills are also something you need to learn (like tools and strategies) and put it in reality.

lifetime activities are certain actions that are either required throughout your life or you choose to do them. for example, eating is considered a lifetime activity, drinking water or other beverages, keeping your body clean, taking medicine. those types of actions are considered lifetime activities.