Question

radiation transfers thermal energy by...
circulating fluids or gases
direct contact
waves
rewatch skip

Explanation:

To determine how radiation transfers thermal energy, we analyze each option:

• "Circulating fluids or gases" describes convection, not radiation.
• "Direct contact" describes conduction, not radiation.
• Radiation transfers thermal energy via electromagnetic waves (e.g., infrared radiation from the sun or a fire). So "waves" is correct.

Answer:

The correct option is: waves (the checkbox next to "waves" should be selected)