Most common form of a stroke and occurs when a blood clot stops the blood supply to the brain.

• A. Haemorrhagic stroke
• B. Ischaemic stroke
• C. Transient ischemic attack
• D. Cerebral infarct

Answer: (C)

The main idea is understanding how strokes are classified by cause. An ischaemic stroke happens when a clot blocks a brain artery, cutting off blood flow and depriving a region of oxygen and nutrients. This blockage leads to brain tissue damage and is the most common type of stroke, making up the majority of cases. A transient ischemic attack involves a similar interruption but is temporary, with symptoms resolving quickly and without lasting brain injury; it’s a warning sign for potential future stroke. A cerebral infarct is the damaged brain tissue that results when ischemia persists long enough to cause cell death. Haemorrhagic stroke, on the other hand, results from bleeding in the brain due to a ruptured vessel.

So the scenario described—most common form of stroke caused by a clot stopping blood flow to the brain—refers to ischaemic stroke.