**Core Concept**
Pre-eclampsia is a pregnancy complication characterized by high blood pressure and often accompanied by significant amounts of protein in the urine, which can lead to maternal and fetal complications. In severe cases, pre-eclampsia can cause visual disturbances, headaches, and even seizures, necessitating immediate medical attention.

**Why the Correct Answer is Right**
The correct answer involves a combination of antihypertensive medication, magnesium sulfate (MgSO4) for seizure prevention, and delivery termination. This is because severe pre-eclampsia poses a significant risk to both the mother and the fetus. The high blood pressure can cause end-organ damage, and the vision disturbances and headaches are indicative of a more severe disease process. Magnesium sulfate is a neuroprotective agent that helps prevent seizures in patients with pre-eclampsia. Delivery termination is the definitive management of pre-eclampsia, as it removes the placenta and resolves the underlying cause of the condition.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because MgSO4 is not given to "terminate" the pregnancy but rather to prevent seizures in patients with severe pre-eclampsia. The correct term is "delivery" or "termination of pregnancy."
**Option B:** This option is incorrect because observation alone is not sufficient for a patient with severe pre-eclampsia, as this condition can rapidly progress and cause significant maternal and fetal morbidity.
**Option C:** This option is incorrect because simply admitting the patient and observing her is not sufficient management for a patient with severe pre-eclampsia.
**Option D:** This option is incorrect because sending a patient with severe pre-eclampsia home on antihypertensives alone is not a safe or adequate management strategy.

**Clinical Pearl / High-Yield Fact**
A classic clinical correlation for severe pre-eclampsia is the "thrombotic storm," where patients experience a sudden onset of visual disturbances, headaches, and seizures due to severe hypertension and endothelial dysfunction. This is a critical clinical scenario that requires immediate recognition and management.

✓ Correct Answer: A. Admit & give antihypertensives, MgSO4 and terminate