Question

One student designed an experiment with sugar, water, and sand. The steps of the experiment are shown below.

Make a thumb size hole at the bottom of an 18 oz styrofoam cup.
Roll a piece of paper into a tube and place it in the middle of the cup over the hole.
Fill the tube with sugar and surround the tube with sand.
Pull out the paper tube slowly from the cup and then dip the cup into a beaker of water.
Watch the sugar cubes dissolve in water to form gaps in the sugar layer.
The student's experiment demonstrates the formation of (1 point)
Group of answer choices

wells

geysers

springs

sinkholes