Which statement is true? Group of answer choicesA competitive market maximises total surplus as all the gains from trade are realized.In a competitive market all trade for which the MB is greater than or equal to the MC of production take place.If output was increased beyond the traded in a competitive market total surplus would decrease.The competitive equilibrium outcome is Pareto efficient.All of the above.

All of the above.

Explanation:

1. A competitive market maximizes total surplus as all the gains from trade are realized: This is true because in a competitive market, prices adjust until the quantity supplied equals the quantity demanded, which is the point where total surplus (the sum of consumer and producer surplus) is maximized.

2. In a competitive market all trade for which the MB (Marginal Benefit) is greater than or equal to the MC (Marginal Cost) of production take place: This is also true. In a competitive market, firms will continue to produce as long as the price (which equals the marginal benefit to consumers) is greater than or equal to the marginal cost of production.

3. If output was increased beyond the traded in a competitive market total surplus would decrease: This is true because if output is increased beyond the equilibrium level, the marginal cost of production will exceed the marginal benefit to consumers, leading to a decrease in total surplus.

4. The competitive equilibrium outcome is Pareto efficient: This is true because in a competitive market, resources are allocated in a way that it's impossible to make

All of the above statements are true.

1. A competitive market maximises total surplus as all the gains from trade are realized. This is because in a competitive market, the price is determined by the intersection of supply and demand, which ensures that all mutually beneficial trades occur.

2. In a competitive market all trade for which the marginal benefit (MB) is greater than or equal to the marginal cost (MC) of production take place. This is because firms will continue to produce as long as the price (which equals the MB) is greater than or equal to the MC.

3. If output was increased beyond the traded in a competitive market total surplus would decrease. This is because producing beyond the equilibrium quantity would mean that the MC of production is greater than the MB, which would lead to a decrease in total surplus.

4. The competitive equilibrium outcome is Pareto efficient. This means that no one can be made better off without making someone else worse off. In a competitive market, this is achieved at the equilibrium where supply equals demand.