Answer: The correct answer is "air is a poor conductor".
Explanation:
Air is a mixture of gases. The amount of heat that can be transferred is minimal through air.
Air is an insulator. Insulator is used to control and slow the transfer of energy from the warmer objects to cooler objects. Air is a bad conductor.
Conductors allow the energy to flow while an insulator stops the flow of energy.
The wool traps air against your body as both wool and air are poor conductor.
Therefore, Air spaces are used in insulation because air is a poor conductor.
when an object receives energy due to heat flow then the kinetic energy of the particles of the object increases because the kinetic energy and the temperature are directly proportional to each others. When heat is added to the object then the movement of the particles increases.