According to Research by Flynn,what Is Happening to the Overall

Multiple Choice

According to research by Flynn,what is happening to the overall IQ scores of people in developed countries over the last century?

A) IQ scores have been steadily dropping over the past 100 years.
B) The IQ scores of women are rising, while the IQ scores of men have been staying the same over the past 100 years.
C) IQ scores have been staying stable despite efforts to improve performance on IQ tests.
D) IQ scores have been steadily rising over the past 100 years.