Which of the following is a primary function of the hindbrain?

The primary function of the hindbrain is indeed motor coordination and breathing. The hindbrain consists of structures such as the cerebellum, pons, and medulla oblongata, which play crucial roles in regulating essential physiological processes and coordinating movement.

The cerebellum is specifically involved in fine motor control and balance, allowing for smooth and coordinated physical movements. Additionally, the pons and medulla oblongata control vital functions such as respiration, heart rate, and blood pressure. These functions are critical for survival and the overall maintenance of bodily operations. Therefore, the contribution of the hindbrain to both motor activities and autonomic physiological functions underscores its importance in basic life processes.

Other options pertain to higher-level cognitive functions or emotional processes, which are primarily governed by other areas of the brain, such as the cerebral cortex and limbic system.