Ancient anthropoids began to have fewer offspring that required longer and more attentive care. What did this select for?
A. a greater reliance on nuts and tubers
B. pair bonding, which resembles the nuclear family, among 90 percent of present-day anthropoids
C. a greater capacity for brachiation
D. increased reliance on life in trees, which protected the young from predators
E. increased social complexity
Answer: E
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