Because sometimes or most of the times it uses deceptive ways to manipulate or convince the consumers to buy a service/product that can be very misleading (therefore unethical)
Answer: Aorta
Explanation: The aorta is the largest artery in the body. It carries oxygenated blood from the left ventricle of the heart into systemic circulation. The aorta has many subdivisions that branch off into smaller arteries.