Addictive disorders may stem from malfunctioning reward centers in the

a. reticular formation.

b. cerebellum.

c. limbic system.

d. thalamus.

Limbic system.

Explanation:

The limbic system lies at both the sides of the thalamus. This structure is also known as paleomammalian cortex. The limbic system was discovered by Paul D. Maclean.

The limbic system is involved in the emotion control, motivation, behavior and also involved in the award and punishment. The malfunctioning in the limbic system may stem the various addictive disorders.

Thus, the correct answer is option (c).