Question

the cell shrunk in size,

Explanation:

When a plant cell is placed in a hypertonic solution, water moves out of the cell by osmosis. This causes the protoplasm to shrink away from the cell wall, a process called plasmolysis. In an isotonic solution, there is no net movement of water, and the cell remains normal. In a hypotonic solution, water moves into the cell, causing it to swell. Since the cell shrunk (plasmolysed), it was placed in a hypertonic solution.

Answer:

Hypertonic