Scenario Please Read the Following Scenario to Answer the Following Questions

Scenario
Please read the following scenario to answer the following questions.
The last few miles of the marathon are the most difficult for Heather. Her hair is plastered to her head, sweat clings to her arms, and her legs feel as if they had nothing left. Heather grabs a cup of ice water. The ice cubes smash against her nose as she gulps some cool refreshment and keeps on running. Then a breeze kicks up and she finally feels some coolness against her skin. Drops of sweat, once clinging to her forehead, now spill down, and Heather feels a stinging as the sweat flows into her eyes.
-When Heather grabbed the glass of ice water, the ice cubes were floating at the top. Why were the ice cubes floating in the water?

A) Water can store large amounts of heat.
B) Water can moderate temperatures through evaporative cooling.
C) The density of water decreases when it freezes.
D) Water has a cohesive nature.