Highly coordinated children are picked out at an early age by coaches and given special opportunities to excel at sports. Extraverted children seek out social situations and become unusually comfortable with strangers. Both of these phenomena illustrate
a. the power of the phenotype over the genotype.
b. genotype-environment correlations.
c. the polygenic effect of chromosomes on behavior.
d. how the environment shapes one's genetic endowment.
