Which of the following is true of equilibrium? A) Equilibrium refers

Which of the following is true of equilibrium?

A) Equilibrium refers to a situation where an economic agent can be made better off without making anyone else worse off.
B) Equilibrium refers to a situation where the government allocates resources among economic agents.
C) Equilibrium refers to a situation where all economic agents are making sub-optimal choices and have an incentive to change behavior.
D) Equilibrium refers to a situation where all economic agents simultaneously optimize after considering each other’s actions.

ANSWER

D