Answer:
The central vacuole
Step-by-step explanation:
The diagram on the left is an animal cell, the diagram on the right is a plant cell. We can see this because of the presence of the cell wall only in the plant cell (the outermost layer) and the presence of a large central vacuole (P) that takes much of the cell volume.
The central vacuole of a plant cell is primarily used for storage of water, salts, carbohydrates, proteins, and lipids. It also maintains turgor pressure against the cell wall to give the plant structure.