Final answer:
The nurse's best response would be to suggest nicotine replacement therapy as a safer alternative to smoking.
Step-by-step explanation:
The nurse's best response would be option B: "Have you considered nicotine replacement therapy while you're pregnant?"
Smoking during pregnancy is highly discouraged due to the numerous risks it poses to both the mother and the developing baby. Nicotine, found in cigarettes, is highly addictive and can have detrimental effects on the cardiovascular system. It can also lead to premature birth, low-birth-weight infants, stillbirth, and sudden infant death syndrome (SIDS). Instead of allowing the patient to smoke, the nurse should encourage the use of nicotine replacement therapy as a safer alternative.