Statistics question - bleh!!

[a_egan9]

if anyone has any clues on this other question that has been puzzling me any help would be greatly appreciated!

 

* someone who runs a correlational analysis says that an effect size of 64% has been found. What value of Pearson's r did they obtain?

 

1) +0.8

2) -0.8

3) 0.8, we cannot tell whether the value is positive or negative

4) +0.64

5) none of the above