The Book the Bell Curve Was Extremely Controversial and Sparked

Multiple Choice

The book The Bell Curve was extremely controversial and sparked a heated debate among researchers.What was the source of this controversy?

A) the idea that the average IQ scores have been increasing across generations
B) the idea that parents have a significant role in the development of their children's IQ
C) the idea that group differences in IQ may be due mainly to genetic factors
D) the idea that racial differences in IQ may be due to different environments