Reinforcing desired behaviors and withholding reinforcement for undesired behaviors is most central to the process of: A) classical conditioning
B) light exposure therapy
C) behavior modification
D) progressive relaxation

C) behavior modification.

Explanation:

Behavior modification is a therapeutic process that is focused on changing any undesirable negative behavior in an individual through the use of positive or negative consequence and biofeedback.

This simply means that, reinforcing desired behaviors and withholding reinforcement for undesired behaviors is most central to the process of behavior modification.

Behavior modification is typically based on operant conditioning principles, through negative or positive reinforcement, undesirable behaviors developed by an individual are mainly replaced with more desirable ones.

Behavior modification can also be used to correct human behaviors or disorders such as enuresis (bed-wetting), Obsessive-Compulsive Disorder (OCD), generalized anxiety disorder, Attention-Deficit/Hyperactivity Disorder (ADHD), phobias, etc.