Final answer:
A plant cell will have the highest turgor pressure in a hypotonic solution since water enters the cell and creates pressure against the cell wall, making the cell turgid.
Step-by-step explanation:
The plant cell will have the highest turgor pressure when it is in a hypotonic solution. In hypotonic environments, water enters the cell due to osmosis, since the concentration of solutes is lower outside the cell than inside. This causes the water vacuoles, or tonoplasts, inside the plant cells to expand, creating turgor pressure as the cytoplasm pushes against the rigid cell wall. The plant cell remains turgid rather than bursting due to the support of its cell wall, which reaches equilibrium with the osmotic pressure. Conversely, in a hypertonic solution, water leaves the cell, leading to plasmolysis, and in an isotonic solution, there is no net movement of water, resulting in no change in turgor pressure.