The rewarding property of reinforcing stimuli like food and sex is believed to be related to the activity of which brain structure?

A) hippocampus
B) nucleus accumbens
C) amygdala
D) thalamus

Answer: B
Rationale: The nucleus accumbens becomes activated during the processing of all kinds of rewards, including primary ones such as eating and having sex, as well as "artificial" rewards such as using cocaine and smoking a cigarette. It is believed to function as a reward center.