Professor McKenzie's Research Suggests That Approximately 30 Percent of the Variation

Multiple Choice

Professor McKenzie's research suggests that approximately 30 percent of the variation in SAT scores among a large group of high school students can be attributed to genetic differences among the students.The 30-percent figure represents an assessment of

A) polygenetic factors.
B) the family-environment effect.
C) heritability.
D) general intelligence.