The most important factor for convection to occur is heat.
What is heat transfer by convection?
Convection is a method of heat transfer that involves the movement of fluid from hot region to cold region.
Heat transfer processes by convection is dominant in liquids and gases.
Therefore, we can conclude that the most important factor for convection to occur is heat, because the heat must flow from hot region to cold region through fluid movement.
Learn more about convection heat transfer here: https://brainly.com/question/893656
