**Core Concept**
The definitive management of severe hypertension in a pregnant woman, especially with signs of organ damage such as proteinuria and retinal hemorrhage, involves stabilizing the mother's condition while also considering the best outcome for the fetus. This requires a multidisciplinary approach, often involving prompt delivery of the fetus.

**Why the Correct Answer is Right**
The presence of severe hypertension (BP 160/110 mm Hg) in a pregnant woman at 32 weeks' gestation, coupled with proteinuria and retinal hemorrhage, is indicative of severe preeclampsia. Severe preeclampsia is a life-threatening condition that requires immediate attention. Delivery is the definitive management of severe preeclampsia, as it reduces the risk of maternal and fetal morbidity and mortality. Delivery can be achieved via cesarean section if necessary, but the goal is to expedite delivery to prevent further complications.

**Why Each Wrong Option is Incorrect**
**Option A:** Ritodrine is a tocolytic agent used to suppress premature labor and is not indicated in the management of severe preeclampsia.
**Option B:** Nifedipine is a calcium channel blocker that can be used to manage hypertension in pregnancy but is not the definitive management of severe preeclampsia with organ damage.
**Option C:** Magnesium sulphates are used to prevent seizures in eclampsia and to manage severe hypertension but are not the definitive management of severe preeclampsia with organ damage.

**Clinical Pearl / High-Yield Fact**
Severe preeclampsia is a medical emergency that requires prompt delivery to prevent maternal and fetal morbidity and mortality. A blood pressure of 160/110 mm Hg or higher, proteinuria, and signs of organ damage are indications for expedited delivery.

**Correct Answer Line**
✓ Correct Answer: D. Termination of pregnancy