which area of the brain, attached to the basal ganglia by an impulsive, reward-seeking system, plays a large role in brain addiction? a. hippocampus
b. medulla oblongata
c. hypothalamus
d. nucleus accumbens?

The correct option is d. nucleus accumbens

Explanation:

The nucleus accumbens is a subcortical brain structure that is part of our pleasure and reward-seeking system. It is responsible for activating our motivation and allows the will to be translated into action.  This brain organ is located in an area of the brain called basal. Each cerebral hemisphere has a nucleus accumbens. This structure is part of the so-called basal ganglia and receives connections from the ventral tegmental area, which causes dopamine to occur in this area.

The nucleus accumbens plays an important role in the addictive process, since it is linked to reward experimentation. This brain nucleus is part of the mesolimbic pathway, forming part of the brain reward center. Specifically, it's in this area where stimulant drugs act, producing an increase in brain dopamine levels.