Biology

The correct answer is: A.A vesicle fuses to the membrane to release substances outside the cell.

Explanation:

Exocytosis is the process by which a cell transports substances out of the cell. In this process, a vesicle containing the substance (such as proteins, waste materials, or neurotransmitters) moves toward and fuses with the cell membrane. Once the vesicle fuses with the membrane, its contents are released into the external environment.

This is an active transport process that requires energy (usually ATP), as it involves the movement of large molecules or particles against the normal flow of diffusion.

Why the other options are incorrect:

B.A vesicle engulfs substances into the cell: This describes endocytos...