The Increased Brain Size Observed in the Order Primates

The increased brain size observed in the order Primates

A) results in extended periods of nursing and development to accommodate increasing behavioral complexity.
B) results in shorter developmental periods to accommodate the necessary energy expenditures of larger brain size.
C) demonstrates the importance of intelligence in primate evolution.
D) demonstrates the importance of intelligence in primate evolution AND results in extended periods of nursing and development to accommodate increasing behavioral complexity.