Which type of thermal energy transfer causes clouds to form?

Question 2 options:

convection

conduction

radiation

freezing

Convection

Option A, Convection

Explanation:

In convection, heat is transferred by physical movement of either liquid or gas from one region to other. This movement is governed by difference between the temperatures of two regions.

When water gets heated, it converts into water vapor and starts moving towards the sky.

As it reaches a certain altitude the water vapor condenses to form tiny water droplets that constitutes the clouds

Hence, option A is correct