What would happen if solid water were denser than liquid water?

a. plants would wilt.
b. solid water would float on the surface of bodies of water.
c. bodies of water would freeze from the bottom up.
d. water would escape from the atmosphere.

C. Bodies of water would freeze from the bottom up.

Explanation:

The water in the form of ice exhibit low density as compared to the water in the liquid form. Hence, the ice will float over the surface of water if ice is kept in water.

But according to the given condition, the solid water that is actually the ice will be denser than the liquid water. Thus the solid water will sink at the bottom of the liquid water. As a consequence the bodies of water would freeze from the bottom.

the answer is; comparing the frequency of collisions with and without the device

this makes the anti-collision system an independent variable and the collisions a dependent variable. if there are fewer collisions with an anti-collision system that without, then it can be stated that the system is a success. essentially, collisions under an anti-collision system are compared with the frequency of collisions by cars with the human drivers.