The temperature of an object indicates that on contact, heat will flow from that object to an object at a higher temperature; option [A]. This is governed by the fundamental principle of thermodynamics known as the second law, which states that heat naturally transfers from regions of higher temperature to regions of lower temperature until thermal equilibrium is achieved. Heat flow occurs spontaneously in this direction, driving processes such as conduction, convection, and radiation. Therefore, when two objects of different temperatures come into contact, heat energy will transfer from the hotter object to the cooler one until they reach the same temperature. This process continues until both objects attain thermal equilibrium, where there is no net heat transfer between them. Thus, the correct option is [A] flow from that object to an object at a higher temperature, reflecting the established principles of heat transfer and thermodynamics.