Q. A medical student is studying lipid metabolism in preparation for his upcoming exam. As he reviews the role of various apolipoproteins, he is especially intrigued by the complex roles played by the apolipoproteins associated with chylomicrons, including apoB-48, apoE, and apoC-II. He is specifically puzzled about the function of apoE and decides to look into it further. Which of the following best describes the function of it in lipid metabolism?