Final answer:
Animal cells are typically in an isotonic solution to maintain their shape and volume, while plant cells are usually in a hypotonic solution to be turgid and structurally supported. option D.
Step-by-step explanation:
The normal tonicity conditions for typical plant and animal cells differ due to their structural differences. Animal cells, which lack a cell wall, tend to do best in an isotonic solution where there is no net movement of water into or out of the cell. Plant cells, on the other hand, have a rigid cell wall that can handle the pressure when water enters the cell, which means they tend to do best in a hypotonic solution where water enters and creates turgor pressure, supporting the plant's structure.
Therefore, the correct statement that describes the normal tonicity conditions for typical plant and animal cells is: The animal cell is in an isotonic solution, and the plant cell is in a hypotonic solution. This corresponds to option D.