A study showed that people with alcohol problems tend to be depressed
more often than people without alcohol problems. Which factor could be a
hidden variable in this situation?
O
A. All of these are correct.
O
B. Alcohol addiction may cause depression, which in turn may
increase alcohol use.
O
C. There are stresses in life that can lead to both alcohol problems
and depression.
O
D. Depression could cause alcohol addiction, which in turn may
increase depression.