A blood clot in the brain causes: A A heart attack B An irregular heartbeat C Low blood pressure D A stroke

## Step 1<br />A blood clot in the brain can cause a blockage in the blood vessels, which can lead to a stroke. A stroke occurs when the blood supply to part of your brain is cut off due to a blockage or a rupture of a blood vessel leading to brain tissue. This deprives brain tissue of oxygen and begins to die in minutes. <br /><br />## Step 2<br />A heart attack, on the other hand, is caused by a blockage in the blood vessels supplying the heart muscle itself. <br /><br />## Step 3<br />An irregular heartbeat, also known as arrhythmia, is a condition where the heart beats with an irregular or abnormal rhythm. It is not directly caused by a blood clot in the brain. <br /><br />## Step 4<br />Low blood pressure, or hypotension, is a condition where the blood pressure is lower than the normal range. It is not directly caused by a blood clot in the brain. <br /><br />## Step 5<br />Therefore, the correct answer is D, a stroke.