In which of the states of aggregation of a body is the phenomenon of convection possible?

In which of the states of aggregation of a body is the phenomenon of convection possible? A) only solid B) solid and liquid C) only liquid D) liquid and gas

Correct answer: G (liquid and gas)
Explanation: convection is a type of heat transfer in which internal energy is transferred in jets and streams. Convection itself implies the possibility of free movement of molecules in matter. In solids, molecules cannot move freely (due to the presence of a crystal lattice in them) and only oscillate around the equilibrium position. In liquids and gases, molecules are not bound by a crystal lattice and can move freely. It follows that liquids and gases are exposed to convection.