The right option is; C. pons
The pons connects the brainstem and the cerebellum.
The pons is a structure located within the upper section of the brainstem. The pons connects the brainstem and the cerebellum. It performs several important functions such as transmission of nervous system messages to and from other structures within the brain and the spinal cord, breath and sleep cycles regulation and sensations (such as, taste, and hearing).