Anorexics don't want to be fat so they take an excessive amount of laxitives and diet pills. That is answer C.
But they also look like skeletons so they hide under bulky clothing so there is your extreme weight loss, over-exercising and they obsess over food consumed. They play with their food on the plate rather than eat it. Look up Karen Carpenter. She was a very successful singer but suffered from anorexia and died from it. She had it all and still thought she was too fat. She hid under bulky clothing and played with her food rather than eat it.
