Asituation is efficient if it is:
a. not possible to find a transaction that will make at least one person better off without harming others.
b. possible to find a transaction that will make at least one person better off without harming others.
c. possible to find a transaction that will make at least one person better off, even if others are made worse off.
d. a market was used to allocated the good or service.

a. not possible to find a transaction that will make at least one person better off without harming others.

Explanation:

A Pareto improvement refers to a situation in which a change in allocation of resources helps at least one person without damaging anyone. On the other hand, a Pareto efficient situation is one in which no more Pareto improvements can be made (or where it is not possible to find a transaction that will make at least one person better off without harming others).

well, i can't read it so i'll ask you questions about it : )

if you were a reader and you read the introduction, would you want to read more?

does it start with a question? if so, is it something you would want to read about?

and ask any friends or family for their opinion : )

the answer is : the nut cases won't quit battling and their recurrence of flights will going to continue as before despite the fact that the battles are less hazardous now because of their bills have all of a sudden been blunted.   in the falcon dove diversion, two creatures will drive towards one another to crush one another, among the two one will win and other will swerve. in this way, clearly, the battle will be dependably there between two creatures for the assets or mate.