How does smoking affect a nursing mother's milk?

A: She produces milk that contains nicotine
B: She produces no milk
C: She produces milk with high levels of oxygen
D: She produces more mil than nonsmoking mothers

A: She produces milk that contains nicotine

Nicotine and other harmful substances from cigarette smoke can be transferred to the breast milk of a nursing mother who smokes. This can potentially have negative effects on the baby's health and development.