If a sale or trade is pareto efficient (or pareto improving) it means the sale:Choice 1 of 2:has helped at least one party without hurting anyoneChoice 2 of 2:helped one party and hurt another party

The correct answer is Choice 1 of 2: A sale or trade is Pareto efficient (or Pareto improving) if it has helped at least one party without hurting anyone. This concept is based on the economic principle of Pareto efficiency, named after the Italian economist Vilfredo Pareto. In a Pareto efficient situation, resources are allocated in the most efficient manner, and no one can be made better off without making someone else worse off. Therefore, if a sale or trade is Pareto efficient, it means that it has improved the situation for at least one party without making any other party worse off.

The correct answer is Choice 1 of 2: A sale or trade is Pareto efficient (or Pareto improving) if it has helped at least one party without hurting anyone. This concept is based on the economic principle of Pareto efficiency, named after the Italian economist Vilfredo Pareto. In a Pareto efficient situation, resources are allocated in the most efficient manner, and no one can be made better off without making someone else worse off. Therefore, if a sale or trade is Pareto efficient, it means that it has improved the situation for at least one party without making any other party worse off.