Arecent study on the relationship between children's weight and their achievement test scores determined the correlation coefficient to be .9734. which is the most reasonable conclusion based on the correlation coefficient?
a) children who weigh more score lower on achievement tests.
b) as age increases, so do body weight and achievement test scores.
c) children who weigh more spend more time on studying for achievement tests.
d) children should increase their food intake to increase their achievement test scores.