The answer is c. Voice box.
Atherosclerosis is "a disease of the arteries characterized by the deposition of plaques of fatty material on their inner walls."
The answer is C. influenza, chicken pox, and colds because influenza, chicken pox, and colds (called rhinovirus) are all caused by viruses. Food poisoning is not a virus, athlete's foot is a fungal infection, and strep throat is a bacterial infection.
The correct answer is C. Mood disorder or personality disorder.
Michael is not displaying any behavior that would be symptomatic of a psychotic disorder, eating disorder or impulse disorder. Sadness and refusing to socialize can be attributed to mood disorders such as depression and generalized anxiety disorder and personality disorders such as borderline personality disorder.