I do not see any choices but I will give you background on anorexia nervosa- This is basically compulsive exercise and weight loss. Basically this is when people keep keep keep working out and they are at a very low bodyweight . I had a problem with this when I was younger and would not eat. Hope this helps
I believe the best option to your question will be A.
Alzheimer's disease is the most common cause of dementia.
The word dementia describes a set of symptoms that can include memory loss and difficulties with thinking, problem-solving and/or language. These symptoms occur when the brain is damaged by certain diseases, including Alzheimer's disease.