How is heat transferred to a substance or object in contact with the body?

The correct answer is conduction because this process specifically involves the transfer of heat through direct contact between materials or substances. When two objects at different temperatures come into contact, heat energy moves from the warmer object to the cooler one until thermal equilibrium is reached.

In the context of the body, when you touch an object or a substance, heat is transferred directly through physical contact, allowing your body to either gain or lose heat depending on the temperature of the other substance. This is a fundamental principle of thermodynamics that describes how energy moves at the molecular level.

Other methods of heat transfer, such as radiation, involve the transfer of energy through electromagnetic waves, which do not require direct contact. Evaporation refers to a cooling process that occurs when a liquid turns into vapor, taking heat away from the surface of the liquid. Convection involves the movement of fluids (liquids or gases) in response to temperature differences, which can help transfer heat but not through direct contact like conduction does.