Which of the Following Is Evidence of the Adaptation of the Contemporary

Multiple Choice

Which of the following is evidence of the adaptation of the contemporary human brain?

A) Brain size has gradually increased over the last 6,000 years.
B) Genes involved with brain development appear to have changed as recently as 6,000 years ago.
C) Compared with nonhuman primates,the human brain uses oxygen more efficiently.
D) Although the brain comprises only about 2% of the body's weight,it requires about 15% of the body's resources when at rest.