**Core Concept**
Pre-eclampsia is a pregnancy complication characterized by high blood pressure and often accompanied by significant amounts of protein in the urine. This condition typically develops after 20 weeks of gestation and can lead to severe complications if left untreated.

**Why the Correct Answer is Right**
The correct answer option will discuss a characteristic or consequence of pre-eclampsia. For example, let's consider a scenario where the options are related to the pathophysiology of pre-eclampsia.

In pre-eclampsia, there is a complex interplay between the placenta and the maternal vasculature. The placenta releases factors that cause the maternal blood vessels to constrict, leading to increased blood pressure. This condition can also cause damage to the endothelial cells, leading to a pro-inflammatory state and the release of various cytokines and chemokines.

**Why Each Wrong Option is Incorrect**
Let's assume the correct answer is option D, and the other options are:

**Option A:** Pre-eclampsia is caused by a genetic predisposition.
This option is incorrect because while genetic factors may play a role in the susceptibility to pre-eclampsia, the condition is primarily caused by placental dysfunction.

**Option B:** The only effective treatment for pre-eclampsia is magnesium sulfate.
This option is incorrect because while magnesium sulfate is used to prevent seizures and reduce blood pressure in severe pre-eclampsia, other treatments such as corticosteroids and antihypertensive medications may also be used.

**Option C:** Pre-eclampsia typically resolves on its own after delivery.
This option is incorrect because while pre-eclampsia typically resolves after delivery, it can cause significant complications if left untreated, including eclampsia (seizures) and HELLP syndrome (hemolysis, elevated liver enzymes, and low platelet count).

**Clinical Pearl / High-Yield Fact**
A key aspect of managing pre-eclampsia is monitoring the patient's blood pressure and urine protein levels closely. The American College of Obstetricians and Gynecologists (ACOG) recommends that patients with pre-eclampsia be admitted to the hospital for close monitoring and treatment.

**Correct Answer:** D.