Ryan's excessive beer consumption is marked by tolerance. abruptly stopping his beer drinking results in symptoms of withdrawal and an overwhelming urge to drink again. ryan most clearly suffers from

C. Alcohol use disorder

Answer choices are:

A.      Excessive self-awareness

B.      Sensory deprivation

C.     Alcohol use disorder

D.      Excess dopamine

Ryan most clearly suffers from Alcohol use disorder or alcoholism. A person with this disorder cannot control his drinking, being preoccupied with alcohol, and continue to use alcohol even when it causes problems. He has the tendency to drink more to get the same effect or have withdrawal symptoms when he decreases or stops drinking.