What is happening when the cells start to swell up with water

The correct answer is cell will burst.

Explanation:

When a cell takes up water from the environment it will swell up and will become flaccid. This usually happens when a cell is placed in the hypotonic solution with a high concentration of water outside and low solute and the water will move into the cell through osmosis.

If the excess water is not removed from the cell the cell will burst or lyse.

Thus, the cell will burst is the correct answer.

it also supports my hypothesis. if you rest first you can squeeze the clothespin more times. from the data i collected the average of the eight people concluded exercise makes your muscles more fatigued and less able to squeeze the clothespin compared to resting before squeezing.