Final answer:
Cancer itself cannot be transmitted from the pregnant woman to her child. However, smoking during pregnancy is harmful and associated with multiple risks including premature birth, low birth weight, and increased SIDS risk.
Step-by-step explanation:
The concern about whether a chain-smoking pregnant woman diagnosed with lung cancer has passed the cancer to her child has a clear answer. According to current medical understanding, cancer is not a transmissible disease that can be spread from mother to fetus during pregnancy like an infectious disease. The correct statement in this situation is D. The cancer will not be transmitted to the child.
However, it is important for the mother to be aware that smoking during pregnancy can have other serious health implications for the unborn baby, such as premature birth, low birth weight, stillbirth, and an increased risk of sudden infant death syndrome (SIDS), as well as other long-term effects.