Diana decided to spend $140 on a pair of new Adidas® running shoes. She also considered Nike® and Asics® shoes.
The Nike® shoes were her second choice. The opportunity cost of Diana's decision to buy the Adidas® shoes was
not being able to buy the Nike® shoes.
the price of the new Adidas® shoes.
nothing since she got what wanted.
not being able to buy the Asics® shoe.
not buying the Asics® or the Nike® shoes.