Which Statement Best Describes What We Know About Handedness

Multiple Choice

Which statement best describes what we know about handedness?

A) The origins of handedness have a genetic component, but handedness can be altered by environment.
B) A slightly higher percentage of math whizzes are right-handed.
C) Historically, being left-handed was a personal trait that was held in high regard.
D) Handedness is generally confirmed during the toddler years.