The correct answer is A. Solid dispersed in gas.
Smoke is a mixture of solid particles and gases. The solid particles are usually very small, about 0.1 to 1 micrometer in diameter. They can be made of a variety of materials, including soot, ash, and dust. The gases in smoke can be water vapor, carbon monoxide, carbon dioxide, and other pollutants.
Smoke is formed when a material is burned. The heat from the fire causes the material to break down into its component parts. The
solid particles are released into the air, and the gases are released into the air. The solid particles can be carried by the wind for long distances, and they can be harmful to human health.The other options are incorrect. Option B is incorrect because smoke is not a solid dispersed in liquid. Option C is incorrect because smoke is not a gas dispersed in solid. Option D is incorrect because smoke is not a gas dispersed in gas.