## **Core Concept**
The question involves a 30-year-old woman with hypertension and menorrhagia. The management of menorrhagia, particularly in the context of hypertension, requires consideration of treatments that can address both conditions effectively.

## **Why the Correct Answer is Right**
Tranexamic acid is an antifibrinolytic agent that is effective in reducing menstrual blood loss. It works by inhibiting the activation of plasminogen to plasmin, which is involved in the breakdown of fibrin clots. In the context of a hypertensive patient with menorrhagia, tranexamic acid is beneficial as it does not affect blood pressure and can be used in patients with hypertension. It is specifically indicated for the treatment of heavy menstrual bleeding and has a favorable effect on reducing menstrual blood loss without interacting with antihypertensive medications.

## **Why Each Wrong Option is Incorrect**
- **Option A:** While certain NSAIDs can reduce menstrual blood loss by inhibiting prostaglandin synthesis, they might not be ideal for hypertensive patients due to their potential to affect blood pressure and renal function.
- **Option B:** Although hormonal treatments like the combined oral contraceptive pill can regulate menstrual cycles and reduce menstrual blood loss, they might not be the best choice for a hypertensive patient due to the potential risk of exacerbating hypertension.
- **Option C:** This option seems to be missing, but typically, treatments that are not directly addressing menorrhagia or could potentially worsen hypertension would be incorrect.

## **Clinical Pearl / High-Yield Fact**
A key point to remember is that tranexamic acid is a first-line treatment for menorrhagia that does not interfere with blood pressure control, making it particularly suitable for hypertensive patients. It's also worth noting that tranexamic acid can be used in patients with a history of thrombosis, but caution and careful patient selection are advised.

## **Correct Answer:** D. Tranexamic acid.