Final answer:
Among the lipoproteins, Low-density lipoproteins (LDL), Intermediate-density lipoproteins (IDL), and Very low-density lipoproteins (VLDL) are atherogenic because they contribute to the formation of arterial plaque, whereas High-density lipoproteins (HDL) are protective against atherosclerosis.
Step-by-step explanation:
The atherogenic lipoproteins are those that contribute to the formation of plaque in the arteries, a condition known as atherosclerosis. The primary atherogenic lipoproteins are Low-density lipoproteins (LDL), Intermediate-density lipoproteins (IDL), and Very low-density lipoproteins (VLDL). LDL transports cholesterol to various tissues, including arterial walls, where it can contribute to plaque buildup. IDL is an intermediate form that is less dense than LDL and also plays a role in atherogenesis. VLDL is responsible for transporting triglycerides in the body, and as it loses triglycerides through the action of lipoprotein lipase, it is converted into LDL, further linking it to atherogenesis. Conversely, High-density lipoproteins (HDL) are often called the 'good' cholesterol because they help transport cholesterol away from artery walls and back to the liver for excretion or recycling. Therefore, among the options provided, the correct one is C) LDL, IDL, VLDL, which are all atherogenic lipoproteins.