Which of the Following Is Likely to Be a Research

Multiple Choice

Which of the following is likely to be a research topic in behavioral genetics?

A) examining the difference in IQ between a child and his or her identical twin
B) examining the difference in IQ between a child and his or her classmates
C) examining the difference in IQ between a child and his or her teachers
D) examining the difference in IQ between a child at age four and again at nineteen