What are the three forms of heat transfer?

The three forms of heat transfer are convection, conduction, and radiation, making the choice of these options the accurate one.

Convection is the process of heat transfer through the movement of fluids (liquids or gases), where warmer areas of a liquid or gas rise and cooler areas sink, creating a circulation pattern that distributes heat. This is commonly observed in heating systems, where warm air circulates throughout a space.

Conduction refers to heat transfer through solid materials, where heat moves from a higher temperature area to a lower temperature area through direct contact between molecules. This process is evident when a metal rod is heated on one end, and the heat travels to the cooler end.

Radiation involves the transfer of heat energy through electromagnetic waves, which can occur even through a vacuum, without the need for a medium. The warmth felt from sunlight is a prime example of radiant heat transfer.

The other options incorporate terms related to heat transfer but do not accurately describe the three main mechanisms. For instance, while insulation is essential for reducing heat transfer, it is not a method of heat transfer itself. Similarly, evaporation is a cooling process rather than a direct transfer of heat, and compression does not relate to heat transfer methods in the context of this question.