Sun’s heat comes to the Earth through which of the following types of communication medium?

The correct answer is [B] Radiation. The Sun’s heat reaches the Earth primarily through radiation. Radiation is the transfer of heat energy through electromagnetic waves, such as light and infrared radiation, that travel through the vacuum of space. These electromagnetic waves carry energy from the Sun and warm the Earth’s surface when they are absorbed. Unlike convection, which involves the transfer of heat through the movement of fluids, and condensation, which is a phase change process, radiation does not require a medium to propagate. Heat exchange is a broad term that can encompass various methods of transferring heat, including conduction, convection, and radiation, but it is not specific to the transmission of heat from the Sun to the Earth.