Question

why does ice float? water expands when it freezes, making ice less dense than water; hydrogen bonds in water push the ice to the surface; water compacts when it freezes, making ice more dense than water; ice is afraid of water, and avoids it

Explanation:

To determine why ice floats, we analyze density: substances float if less dense than the fluid. When water freezes, it expands (due to hydrogen bond arrangement), reducing ice's density below water’s. The other options are incorrect (hydrogen bonds don’t "push" ice, water compacts on freezing is false, and the "afraid" option is nonsensical).

Answer:

A. water expands when it freezes, making ice less dense than water