An animal cell has a 0.9% saline environment is placed into a solution that is 9% saline. What will happen to the cell

The concentration of cell is less than that of the solution.

Hence the cell will be called as hypotonic and the solution will be called as hypertonic.

in order to balance the concentration on the two sides of cell (inside and outside in the solution) there will be movement of solvent particles (through semipermeable membrane) from cell (lower concentration of solute) to solution (higher concentration of solute).

Thus cell will shrink.