**Core Concept**
Thrombolytics are medications used to dissolve blood clots. The underlying principle being tested is the pharmacological management of thrombotic disorders. Thrombolytics work by activating the **plasminogen-plasmin system**.

**Why the Correct Answer is Right**
The correct answer is related to the condition where thrombolytics are least indicated or effective. This is often due to the risk of bleeding or the presence of other effective treatment options. For instance, in **hemorrhagic stroke**, the use of thrombolytics is contraindicated due to the high risk of worsening the bleeding.

**Why Each Wrong Option is Incorrect**
**Option A:** Thrombolytics may be used in **pulmonary embolism** to dissolve clots in the lungs.
**Option B:** Thrombolytics can be used in **myocardial infarction** to restore blood flow to the heart muscle.
**Option C:** Thrombolytics may be considered in **ischemic stroke** if the patient presents early.

**Clinical Pearl / High-Yield Fact**
A key point to remember is that thrombolytics should be used within a specific time frame from the onset of symptoms for optimal efficacy and safety.

**Correct Answer:** D. Hemorrhagic stroke