Which process involves the movement of large molecules or macromolecules across the cell membrane through vesicles?

Bulk transport refers to the movement of large molecules or macromolecules (like proteins, polysaccharides, or even entire cells) across the membrane via vesicles. This includes endocytosis (bringing materials into the cell) and exocytosis (releasing materials out of the cell). The other options involve transport of smaller molecules or ions, not vesicle-mediated movement.