According to a Recent Study of Nearly 140,000 Women Who

According to a recent study of nearly 140,000 women who were enrolled in the Women's Health Initiative, women who breast-fed their babies had a lower risk of developing heart disease and diabetes later in life than women who did not breast-feed their babies. These research findings are an example of

A) causation.
B) skepticism.
C) hypothesis testing.
D) correlation.
E) deductive reasoning.