Question

Which explanation is most likely the reason for the evolution of a larger brain in humans?

A. The size of the human brain increases the more it is used.
B. A larger brain allows humans to solve complex problems.
C. The size of the human brain has changed randomly over time due to mutations.
D. A large brain increases humans’ ability to fight and survive disease.

Answer 1

A is the answer because number of neurons increases as we use the brain and ultimately to bear more neurons its size will increase

Answer 2

I THINK ITS D AS FIRST AND SECOND ARE SOMATIC .