🩺 Correct Answer and Explanation (Rationale)

The correct answer is: (b) ACE inhibitors

ACE inhibitors such as Enalapril and Captopril are not safe during pregnancy. These medications can cause kidney problems, low amniotic fluid (Oligohydramnios), and birth defects in the fetus.

While Labetalol and Nifedipine are considered safe antihypertensives in pregnancy and are commonly used in pregnancy-induced hypertension. Diuretics are generally avoided, but they are not as dangerous as ACE inhibitors.

👉 Therefore, from an exam point of view, the most correct answer is – ACE inhibitors