Alcohol causes a. a diminished ability to concentrate on multiple subjects at once b. an increased ability to concentrate on one subject c. an increase in emotional control d. none of the above

i would say the closest answer is A. Alcohol doesn't just affect your health. It also affects your mood and personality in ways you can't anticipate.The psychological effects of alcohol and other drugs can be extremely debilitating. When you consume alcohol, you'll experience:

Impaired judgment

Poor concentration

Impaired thinking and reasoning

Compulsiveness

Exaggerated feelings of anger, fear, and anxiety