Answer:
Not buying the Asics or the Nike shoes.
Step-by-step explanation:
Opportunity cost is an economic expression that refers to alternative buying opportunity decisions that have been waived for another opportunity to apply economic resources to be completed. What influences the opportunity cost is the desire for the acquisition, in the case of Diana she had first choice to buy Adidas shoes, followed by Nike and Asics that could cost a lower amount than she paid in the chosen tennis, but not they had the same added benefits that Diana expected when choosing a good as a first call option.