**Core Concept**
A molar pregnancy is a gestational trophoblastic disease characterized by abnormal trophoblastic proliferation and invasion of the uterus, posing a risk of malignant transformation and metastasis. Hysterectomy is considered in cases of complete molar pregnancy, especially in women who are poor candidates for medical management or have a history of recurrent molar pregnancies.

**Why the Correct Answer is Right**
The primary advantage of hysterectomy in molar pregnancy is the definitive removal of the abnormal gestational tissue, eliminating the risk of persistent gestational trophoblastic neoplasia (GTN) and its associated complications, such as metastasis and malignant transformation. This approach is particularly beneficial for women who are at high risk of developing GTN or have a history of previous molar pregnancies.

**Why Each Wrong Option is Incorrect**
**Option A:** Medical management with methotrexate is often the first-line treatment for molar pregnancy, especially for women who are good candidates for medical therapy.
**Option B:** While hysterectomy may be necessary in cases of incomplete molar pregnancy, it is not the primary advantage in complete molar pregnancy.
**Option C:** The risks associated with hysterectomy, such as surgical complications and potential impact on future fertility, must be carefully weighed against the benefits.

**Clinical Pearl / High-Yield Fact**
In cases of molar pregnancy, it is essential to consider the risk of persistent GTN and the potential need for adjuvant chemotherapy, even after medical management.

**Correct Answer:** C.