Which of the following is NOT a function of the hypothalamus?

The hypothalamus is a critical part of the brain that plays a vital role in maintaining homeostasis by regulating various bodily functions. One of its primary responsibilities is regulating hunger, thirst, and body temperature. It processes signals related to energy balance and fluid balance, influencing food and water intake, and it helps maintain a stable internal environment despite external changes.

On the other hand, controlling voluntary movement is primarily associated with other areas of the brain, such as the motor cortex and basal ganglia. While the hypothalamus can influence certain behaviors related to movement, particularly those tied to survival like feeding or fleeing, it does not directly control voluntary movements as the motor cortex does.

Therefore, identifying controlling voluntary movement as not a function of the hypothalamus is accurate, as that specific role is found in different brain regions, highlighting the specialized functions of various parts of the brain.