Donny has begun to drink a lot more than he ever used to, and it's beginning to adversely affect his work and his social and family relationships. is this alcohol abuse, alcoholism, alcohol dependency, or something else entirely?

I thinks this is "alcohol abuse".

Alcohol is the most commonly utilized addictive substance in America. One out of 12 adults in the United States experience alcohol abuse. Alcohol abuse likewise impacts persons' conduct, which can result in mishaps and violence. The impacts of alcohol addiction are grave and extensive. While a few people can beat this addiction all alone, most people need help. As Donny has begun to drink a lot more than he ever used to, so this is alcohol abuse.

in an effort to stem the tide of refugees attempting to leave east berlin, the communist government of east germany begins building the berlin wall to divide east and west berlin. construction of the wall caused a short-term crisis in u.s.-soviet bloc relations, and the wall itself came to symbolize the cold war.

answer; i believe the correct answer is (4) flip a coin as each participant arrives,heads indicates assignment to the first group: tails indicates assignment to the second group;