When water freezes, it expands and becomes more dense expands and becomes less dense contracts and becomes more dense contracts and becomes less dense

A) it becomes less dense, and C) It expands

Explanation:

When water freezes, it expands and becomes less dense.

does anyone know or what?

blue light is scattered in different directions by the tiny molecules of air. blue is scattered more than other colours because it has a shorter distance to travel which results in smaller waves. this is why we see a blue sky most of the time.