Answer: because people have a poor perception of their image.
Explanation:
People who develop an eating disorder such as anorexia and bulimia are people who have low self-esteem. They look in a mirror and do not like what they see of themselves, so they resort to extreme eating behaviors to achieve what they call "ideal weight."
A because it is useful to keep track of a patients individual other than asking about math or comparing to another patient and cause if they compare to someone else it might not help you if something is really wrong.
The most fitted in my opinion would be a see “D”