If a Study Concludes That Increases in Aerobic Exercise Are

Multiple Choice

If a study concludes that increases in aerobic exercise are correlated with increases in brain functioning in older adults, what can we assume to be true?

A) The increased exercise caused an increase in brain functioning.
B) The two variables are unrelated.
C) The variables are positively related or correlated.
D) The two variables are inversely or negatively correlated.