You know that ice floats in water. This is because

Aice is less dense than water.
Bice is making the water colder.
Cwater is making the ice warmer.
Dice is a solid and water is a liquid.

Verified Answer :

A BECAUSE WHEN ITS MORE DENSE IT CAN FLOAT AND THE OTHER CHOICES DONT MAKE SENSE

AL2006


Anything that floats in some fluid must be less dense than the fluid.