The correct answer is A. Conduction
Step-by-step explanation:
In physics, the word conduction describes the transfer of the internal energy of an object or body (heat), which is the result of inner molecules moving that flows from the hot body or surface to a colder one. This transfer can occur in gases, solids, and liquids and usually involves the contact between one body and the other different to radiation or convection. For example, if you touch a pot or element that has been near the fire the heat on it is transferred to you. Considering this, it is conduction or thermal conduction the concept that describes heat being transferred from a hot surface to a cool surface in direct contact.