In Teaching About Cancer Prevention,why Does the Nurse Stress Promotion

In teaching about cancer prevention,why does the nurse stress promotion of exercise,normal body weight,and a low-fat diet?

A) General aerobic health is an important defence against cellular mutation.
B) Obesity is a factor that promotes cancer growth;if it is reversed,the risk of cancer can be decreased.
C) People who are overweight usually consume large amounts of fat,which is a chemical carcinogen.
D) The development of fatty tumours,such as lipomas,is increased when fatty tissue is abundant.