Which of the following is described as an abnormal or disturbed eating habit?

The correct choice is the term "eating disorder," which serves as an umbrella term for various abnormal or disturbed eating habits that can negatively impact an individual’s physical and mental health. Eating disorders encompass a range of conditions, including anorexia and bulimia, both of which fall under the category of eating disorders characterized by unhealthy eating patterns.

Anorexia involves self-starvation and excessive weight loss, while bulimia is characterized by cycles of binge eating followed by compensatory behaviors such as purging. Both of these are specific types of eating disorders that illustrate the broader issue referred to as eating disorders. Meanwhile, "acceptable dieting" does not reflect abnormal or disturbed eating practices; rather, it refers to a more balanced and generally healthy approach to managing food intake, which neither anorexia nor bulimia represents. This distinction highlights why "eating disorder" is the most accurate choice among the options provided.