Concept:Vacuoles in plant cells help in storage and also provide mechanical support.
Explanation:The central vacuole is filled with cell sap, which mainly contains water and dissolved substances.
This vacuole stores water, nutrients, and waste products.
When the vacuole absorbs water, it expands and pushes against the cell wall.
This creates internal pressure called turgor pressure.
Turgor pressure makes the plant cell firm and rigid, giving support to the plant body.
When water is lost, turgor pressure decreases and the plant wilts.
Therefore, apart from storage, vacuoles are directly involved in maintaining the shape and support of plant cells.
Answer:The correct option is C. support.