What are the two types of FOG?

The two main types of fog recognized in meteorology are radiation fog and advection fog, making radiation and advection the correct choice.

Radiation fog forms when the ground cools rapidly during clear, calm nights, leading to the condensation of moisture in the air close to the surface. This type of fog typically dissipates once the sun rises and temperatures begin to climb.

Advection fog, on the other hand, occurs when warm, moist air passes over a cooler surface, causing the air to cool to its dew point and resulting in condensation. This fog is often seen along coastlines where warm air from the sea moves inland over cooler land surfaces.

These two processes highlight the different mechanisms through which fog can develop in various meteorological conditions.