Answer D. Cerebellum
The cerebellum, which stands for “little brain”, is a structure of the central nervous system. It has an important role in motor control, with cerebellar dysfunction often presenting with motor signs.
The cerebellum is located at the back of the brain, immediately inferior to the occipital and temporallobes,and within the posterior cranial fossa.
It is separated from these lobes by the tentorium cerebelli, a tough layer of dura mater.
It lies at the same level of and posterior to the pons, from which it is separated by the fourth ventricle.