Answer: Option (c) is the correct answer.
Explanation:
Property of a substance to resist the flow of motion is known as viscosity. And, more is the density of a substance more will be its viscosity.
Whereas, lesser is the density of a substance then it is easy for the substance to move.
For example, density of oil is less than the density of water that is why, oil is able to float on the surface of water.
And, air being a gas will be able to move easily from one place to another because there is weak force of attraction between its molecules.
Thus, we can conclude that substances in order from most dense to least dense are as follows.
syrup > water > oil > air
