A) This option is incorrect. Not all medications are safe to use during pregnancy, and some may pose risks to the developing baby, including potential congenital heart defects.

B) Correct answer. Some medications, like certain antihypertensives and medications with known teratogenic effects, can increase the risk of congenital heart diseases if used during pregnancy. It is essential for pregnant individuals to work closely with their healthcare providers to manage any medical conditions and choose safe medications during pregnancy.

C) This option is incorrect. Some vaccinations are recommended during pregnancy to protect both the mother and the baby from certain infections. Properly administered vaccinations during pregnancy are generally safe and do not significantly impact heart development.

D) This option is incorrect. Medication use during pregnancy can have various effects on the developing baby, and certain medications may increase the risk of congenital heart diseases.