## **Core Concept**
The patient's symptoms of amenorrhea, infertility, and galactorrhea suggest hyperprolactinemia, a condition characterized by elevated levels of prolactin in the blood. This condition can disrupt normal menstrual function and fertility. The treatment involves reducing prolactin levels or counteracting its effects.

## **Why the Correct Answer is Right**
The correct answer, **C. Cabergoline**, is a dopamine agonist that inhibits the secretion of prolactin from the pituitary gland. It is commonly used to treat hyperprolactinemia and its symptoms, such as amenorrhea and galactorrhea. Cabergoline works by stimulating dopamine receptors in the pituitary gland, which decreases prolactin secretion. It is administered orally and has a high efficacy in restoring ovulation and menstruation in women with hyperprolactinemia.

## **Why Each Wrong Option is Incorrect**
- **Option A:** is incorrect because, although it could be a treatment for hyperprolactinemia, it is not as commonly used or as effective as Cabergoline in restoring ovulation and menstruation.
- **Option B:** is incorrect because it is not typically used for the treatment of hyperprolactinemia.
- **Option D:** is incorrect because it does not directly address the issue of hyperprolactinemia and its symptoms.

## **Clinical Pearl / High-Yield Fact**
A key point to remember is that before initiating treatment with dopamine agonists like Cabergoline, patients should be carefully questioned about a history of mental health problems, as these drugs can have psychiatric side effects, including depression and psychosis.

## **Correct Answer:** C. Cabergoline.