Answer:
b. If a market is in equilibrium, there will be no remaining opportunities for individuals to make themselves better off
Explanation:
Equilibrium refers to a state of rest. Market equilibrium refers to a situation wherein quantity demanded of a product equals quantity supplied of that product.
Market equilibrium only gets disrupted when factors affecting demand other than the price changes which leads to either increase/decrease in demand or increase/decrease in supply.
At the equilibrium level, the possibility of individuals making themselves better off get wiped out.