What type of colloid the fog is ?

Step-by-step solution

The classification depends on the states of the dispersed phase and dispersion medium. In fog, a liquid (water droplets) is dispersed in a gas (air), which forms a liquid aerosol . Other examples include mist and clouds. Conversely, foam is a gas in a liquid, gel is a liquid in a solid, and emulsion is a liquid in a liquid. The correct option is A .