Peter Is a Very Precocious 4-Year-Old

Multiple Choice

Peter is a very precocious 4-year-old.He is already starting to read and has the vocabulary of a 10-year-old.Peter's parents are very academic.Their house is filled with books and intellectual conversation.What is the most reasonable conclusion about the source of Peter's high intelligence?

A) He inherited the genes for high intelligence from his parents.
B) His parents provided the stimulation needed to develop high intelligence.
C) His intelligence resulted from an interaction of genes and environment.
D) Either genes or the environment could be the causal factor for his high intelligence.