Question

multiple choice question which area of the brain shrinks the most as we age, losing as much as 45% of its cells? diencephalon brain stem cerebral cortex cerebellum

Explanation:

As we age, the cerebellum is known to shrink significantly and can lose up to about 45% of its cells. It plays a key role in motor control, balance, and some cognitive functions. The other brain - areas mentioned do not experience such a high degree of cell loss with aging.

Answer:

D. cerebellum