Can good prenatal care prevent all birth defects?

Good prenatal care is essential for the health of both the mother and the developing fetus, but it cannot prevent all birth defects. Prenatal care provides important screenings, nutritional guidance, and monitoring of the mother's health, which can significantly reduce the risk of certain conditions and complications. Factors such as genetic predispositions, environmental exposures, maternal health conditions, and random mutations can contribute to birth defects that are not preventable through medical care.

Additionally, some birth defects result from complex interactions between genetic and environmental elements that may not be fully understood. While prenatal care can address many risk factors, it cannot account for every possible influence on fetal development. As a result, the claim that good prenatal care can prevent all birth defects is not accurate, making the correct answer "B. False."