Kristy Is a 21-Year-Old College Student Who Is Concerned About

Kristy is a 21-year-old college student who is concerned about breast cancer because both her mother and grandmother developed the disease before the age of 55.Current evidence shows that Kristy can reduce her chances of breast cancer by

A) continuing as a nondrinker.
B) continuing as a nonsmoker.
C) beginning and maintaining a regular physical activity program.
D) doing all of these.