When an animal cell is placed in a hypotonic solution,

it will gain water and may burst
it will lose water and shrink
it will remain the same size
the cell's reaction cannot be determined

it will gain water and may burst

The correct answer is -

it will gain water and may burst.

Explanation:

Hypotonic solution is the one that contains higher concentration of solvent (such as water) as compared to solute concentration.

Water always moves from area of high to low concentration through osmosis.

Thus, if an animal cell is placed in a hypotonic solution, it will gain water through osmosis, swell and may burst as they lack cell wall (unlike plant cell that have cell wall to prevent cell lysis due to osmosis).

Thus, first option is the right answer.

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