The brain structure which is responsible for the human ability to engage in higher mental activity such as thinking and philosophising is the

A) corpus callosum.
B) cerebrum.
C) cerebellum.
D) hypothalamus.

The cerebrum is the part of the brain responsible for higher mental functions such as thinking, reasoning, and philosophizing. The corpus callosum is a band of nerve fibers that connects the two hemispheres of the cerebrum, but it is not responsible for higher mental functions on its own. The cerebellum is responsible for coordination and balance, while the hypothalamus is responsible for regulating basic bodily functions such as temperature and hunger.