<prompt> The most common cause of embolic strokeNon rheumatic atrial fibrillationCarotid aery atherosclerosisParadoxical embolismLV aneurysm  <response>: Ans. is a i.e., Non rheumatic atrial fibrillation No rheumatic atrial fibrillation leads to clot formation in left atrial appendage that can embolize to the brain leading to neurological dificits 