Biology

The correct answer is B.bulk transport.

Bulk transport (also known as vesicular transport) is the process by which large particles or large quantities of smaller particles are moved across the cell membrane using energy. This process includes two main types:

1.Endocytosis: The cell engulfs large particles or liquids into vesicles to bring them inside.

2.Exocytosis: Vesicles inside the cell fuse with the plasma membrane to release their contents outside the cell.

Both processes require energy (ATP) because they involve the formation or fusion of vesicles, which is an active process.