Based on your description of the image involving a cell membrane, a vesicle, and cytoplasm, the process shown is likely exocytosis.
Exocytosis is the process by which cells expel materials contained in vesicles. These vesicles fuse with the cell membrane, releasing their contents outside the cell.
If the image depicted a vesicle moving toward and fusing with the cell membrane to release its contents outside the cell, then exocytosis is the correct answer.
If you were looking for another interpretation or if there’s more specific detail in the image you could provide, feel free to share!