How does water relative densities as a solid and a liquid differ from that most other substance ?

The density of the solid form of water is less than the density of water in its liquid form. However, majority of other substances increases in density when they solidify.

answer; i believe the correct answer is (c) /// is a homogeneous mixture of gaseous substance nitrogen,oxygen and smaller amounts of other substancesmixtures can be either ( homogeneous or heterogeneous)plz check first good luck