Which of the Following Is Not Evidence Indicating That the Relationship

Multiple Choice

Which of the following is not evidence indicating that the relationship between school achievement and IQ may be a two-way street?

A) There is a small but significant drop in children's IQs over summer vacation.
B) Children who start school late have lower IQs than children who start school on schedule.
C) Average IQ scores get higher with age.
D) There is a strong, positive correlation between years of education and IQ.