Question

an animal cell placed in a hypertonic (salty) solution will
shrink
stay the same
swell

Explanation:

When an animal cell is placed in a hypertonic solution, osmosis occurs. The hypertonic solution has a higher solute concentration than the cell's interior. Water will move out of the cell (from an area of lower solute concentration - inside the cell to an area of higher solute concentration - the hypertonic solution) through the cell membrane. As water leaves the cell, the cell loses volume and shrinks.

Answer:

Shrink