Answer:
The change is caused by<u> C. Turgid pressure </u>
Explanation:
Turgor pressure, is exerted internally by the plants own cells. The water in the plant moves from areas of high concentration to areas of low concentration along a concentration gradient.
The cells contain large organelles called vacuoles, which are filled with water, salts and other substances contained in cell sap. The large vacuole takes up most of the cell, and pushes against the cell walls. This exerted pressure keeps the cell's shape, and ensure that the tissues stay upright.
