Duffy's Research Addresses the Relationships Among Amount of Practice Time

Multiple Choice

Duffy's research addresses the relationships among amount of practice time, race times, and motivation for running in high school athletes. He measures motivation for running by a Likert scale.
-Duffy's findings indicate a strong positive relationship between practice time and race times. Which of the following is a possible correlation in his research?

A) -.80
B) -.30
C) .30
D) .80