Which one of these definitions best describe Opportunity Costs?

Amber was shopping at the mall. She had $80 to spend. She found three items she liked: $75 for a pair of shoes, $70 for a jacket, and $62 for a dress. After shopping for a couple hours, she decided to borrow a pair of shoes from her cousin and to buy the jacket for $70. What was her opportunity cost?

Tom was shopping for a car. He has looked at a Ford, Honda, Toyota, and Dodge. After a lot of debate, he narrowed it down to either the Ford or the Honda. He selected the Ford, because he liked the interior a little better. What was his opportunity cost?

How much of something that is available is ______________.

Coins or dollars that are used to buy a good or service is called _____________.

To control the amount of something that people are allowed to have, especially when there is not enough is known as _____________.

There are 18 students that want to use blue poster board for their project, but there are only 6 pieces of blue poster board available. We could state that there is a _____________ for blue poster board.

A ____________ is a good thing that occurs as a result of something else.

I should ration the water bottles, and only let each person have one, since I have more than enough for everybody.