Dr Guidry Conducts a Study Examining the Relationship Between the Number

Dr. Guidry 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 Nashville, Tennessee (the state capital) , located 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)
According to the benchmarks established by Cohen, what type of effect size has Dr. Guidry found for the association between number of friends and life satisfaction?

A) Very small
B) Small
C) Medium
D) Large