The student returned the book she checked out to the school library before completing her project to avoid a paying a fine. what was her opportunity cost?

Remember that in economics an opportunity cost is the price you have to pay for choosing one thing instead of another. In other words, it is a benefit, or value of something that is given up to adquire something else.

As resources are allways limited, it is important to take very well thought decisions, choosing one implies not choosing other. In this case the opportunity cost of the student is the extra information she could have obtained from the book to improve her project.

the correct answer is "c": the pillars proclaimed his regret at the bloodshed at the battle of kalinga and his conversion to buddhism.

the kalinga war is considered as one of the largest battles in the history of india. it was fought between the between the maurya empire, which ruled the lands of what is now known as india at the time, and the independent feudal kingdom of kalinga.

the army of maurya empire, led by its king ashoka, fought a prolonged war against kalinga. the war ended around 262 bce with the victory of the maurya empire. it is believed that ashoka, after having witnessed the loss of many lives during this war, felt deep responsibility and eventually converted into buddhism.

chronological thinking is an indispensable tool to structure a historical narrative and to give meaning to a sequence of events. the final section presents the results of a survey to test the chronological thinking of lower secondary school students carried out by the educational research institute.