Some psychologists argue that men are more likely to take risks than females because
a. fewer men are necessary to sustain population growth in a society
b. more men generally have elevated levels of testosterone and serotonin
c. fewer men have a well-developed frontal lobe, which control impulses
d. more men have discovered that risky behavior is actually quite safe

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brain development. a child's brain undergoes an amazing period of development from birth to three—producing more than a million neural connections each second. the development of the brain is influenced by many factors, including a child's relationships, experiences and environment.

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