DrOswald Conducts a Study Examining the Relationship Between the Number

Dr.Oswald conducts a study examining the relationship between the number of friends one has and the experience of daily stress and life satisfaction.She randomly samples 1,500 elderly men and women in the Memphis,Tennessee,area in the southern United States.Below are her findings.
-Life satisfaction and experience of daily stress: r = -.57 ( p = .01)
-Number of friends one has and experience of daily stress: r = .09,not sig.
-Number of friends one has and life satisfaction: r = .36 ( p = .04)

-Comparing all three correlations,Dr.Oswald will be most able to accurately predict life satisfaction from the experience of daily stress because:

A) The relationship is negative
B) The relationship has the largest effect size
C) The relationship was reported first
D) The relationship was statistically significant