Final answer:
The Ventral Tegmental Area (VTA) produces dopamine, which is responsible for arousal and risk-taking behaviors in neurons.
Step-by-step explanation:
The neurons in the behavior that produce the neurotransmitter responsible for arousal and risk-taking are located in the Ventral Tegmental Area (VTA) and they produce dopamine. The VTA's dopaminergic neurons are involved in cognition, affective and behavioral disorders, and are significantly linked with the brain's reward and limbic systems. Dopamine from the VTA influences motor activity, reward-based learning, and cognitive tasks, thereby playing a central role in arousal and risk-taking behaviors.