Because Identical Twins Separated at Birth Did Have the Same

Multiple Choice

Because identical twins separated at birth did have the same prenatal environment and are often placed in homes that are socially and educationally similar, some researchers believe that intelligence would seem to

A) be roughly 80 percent hereditary.
B) be around 66 percent hereditary.
C) be less than 50 percent hereditary.
D) have no hereditary basis.