Answer:
A. equilibrium
Explanation:
Thermodynamic equilibrium leads to the large scale definition of temperature. When two objects are in thermal equilibrium they are said to have the same temperature. During the process of reaching thermal equilibrium, heat, which is a form of energy, is transferred between the objects.
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Heat transfer is the transport of the heat from one system to another due to a temperature difference. Even heat distribution between the objects is called equilibrium.
Thermal equilibrium is the condition in thermodynamics in which the two systems placed in the vicinity of each other exchange no more heat as they are balanced and lack a difference in temperature between them.
In this condition, the temperature of the two systems is equal, and as a result, no heat is transferred between them. The state of the variables of the system remains constant and does not vary with space and time.
Therefore, the same temperature of the system indicates option a. equilibrium.
Learn more about thermal equilibrium here:
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