What is the best evidence for the notion that sociocultural forces play a role in handedness?
A. Only 10 percent of the population is left-handed.
B. Right-handed parents tend to have right-handed offspring.
C. When societal attitudes change, the incidence of left-handedness changes.
D. In American culture, most desks and scissors and golf clubs are made for right-handers.
Answer: C
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