Final answer:
A distorted image of their body shape is a main characteristic of individuals with anorexia nervosa, where they perceive themselves as overweight despite being underweight. The correct answer is option C).
Step-by-step explanation:
Among the main characteristics of people suffering from anorexia nervosa, is a distorted image of their body shape. This eating disorder is marked by an individual's effort to maintain body weight that is significantly below average through starvation, excessive exercise, and an intense fear of gaining weight.
Individuals with anorexia see themselves as overweight, despite being underweight, a condition often described as body dysmorphia. Anorexia nervosa can lead to serious health problems, including bone loss, heart failure, and kidney failure.
Affected individuals typically eat very little, despite possibly being preoccupied with food, and they often exercise excessively to lose even more weight. The disorder can be accompanied by psychological issues, including anxiety and mood disorders, and requires professional treatment.