What is one reason expectant parents should avoid smoking during pregnancy?

Avoiding smoking during pregnancy is crucial because it poses serious risks to fetal development. Smoking is associated with a range of adverse outcomes for the fetus, including low birth weight, preterm birth, placental complications, and increased risk of neurodevelopmental disorders. The harmful substances in cigarettes, such as nicotine and carbon monoxide, can impair blood flow to the placenta, limiting oxygen and nutrient delivery to the developing baby. This can lead to long-term health issues for the child.

In contrast, the other options either imply benefits or minimize risk, which misrepresents the substantial evidence showing the detrimental impact of smoking on both pregnancy and fetal health. Thus, the emphasis on the serious risks to fetal development underscores the importance of avoiding smoking during this critical period.