Muscles are soft tissues composed of fibers and other components. Arteries are the vessels that have the thickest layer of the muscles. Thus, option C is correct.
What is an artery?
An artery is the blood vessel that transports the blood in the body rich in oxygen from the heart. It has the thickest layer of the muscles as it has to withstand the high pressure of the blood flowing from the heart. In contrast, the veins have a thin layer to hold blood.
Therefore, the arteries have thick muscles wall.
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