Question

The most extensively developed region of most mammalian brains is

• A. cerebrum
• B. optic chiasma
• C. hypothalamus
• D. midbrain

Answer 1

The correct option is A cerebrum

The cerebrum or cortex is the largest part of the human brain, associated with higher brain function such as thought and action. The cerebrum, which lies in front or on top of the brainstem, comprises a large portion of the brain. In humans, it is the largest and best-developed of the brain's five major divisions.

So, the correct answer is 'cerebrum'.