The occlusion is the obstruction caused by embolus in the arteries of blood vessels. It is essential to perform cardiovascular surgery to remove this occlusion.
These are not cloudy or broken components that block blood vessels.
Thus, the options (a), (b) and (c) are incorrect.
The occlusion is the obstruction caused by embolus in the arteries of blood vessels. It is essential to perform cardiovascular surgery to remove this occlusion.
Therefore, the correct option is – A. obstructed.