Final answer:
Cholesterol is transported by lipoproteins in the blood. High density lipoproteins (HDL) pick up cholesterol from tissues and transport it to the liver. The correct answer is option c)Lipoproteins.
Step-by-step explanation:
Cholesterol is transported in the blood by lipoproteins, which are complexes of proteins and lipids. The lipoproteins are classified based on their density, which is determined by the relative amount of protein and lipid they contain. High density lipoproteins (HDL) are responsible for picking up cholesterol from tissues and transporting it to the liver, preventing atherosclerosis.
Therefore, the correct answer is C) Lipoproteins.