Question

what happens during radiation?
heat is transferred from warmer objects to cooler objects without touching.
heat is transferred from warmer objects to cooler objects by moving fluids.
heat is transferred from warmer objects to cooler objects by direct contact.

Explanation:

Radiation is a form of heat transfer. It does not require a medium (like direct contact or moving fluids). Heat is transferred via electromagnetic waves. So, heat is transferred from warmer objects to cooler objects without touching.

Answer:

Heat is transferred from warmer objects to cooler objects without touching.