In the following question find out the alternative which will replace the question mark?
Ice : Solid :: Water : ?

Liquid

The answer is Liquid.

The analogy is between ice and its state of matter, solid, and water and its state of matter, liquid. Ice is solid water, and water is liquid water. So, the missing word must be the state of matter of water. Of the answer choices, only liquid fits this description.

The other answer choices do not fit the analogy. Vapour is the gaseous state of water, solid is the solid state of water, and gas is a state of matter that is not solid, liquid, or plasma. None of these are the state of matter of water.