In Study After Study,researchers Have Found That People Who Are

Multiple Choice

In study after study,researchers have found that people who are more similar genetically are also more similar in terms of their IQ scores.These research findings seem to strongly support the genetic contribution to intelligence.Why are some researchers still skeptical that genes have a larger influence on intelligence than environment?

A) Identical twins raised apart still have higher IQ correlations than fraternal twins raised together.
B) The higher IQ score correlations of identical twins may be partly explained by their more similar environments rather than by their genes.
C) Adopted children have higher IQ correlations with their biological parents than with their adoptive parents.
D) All of the above