The opportunity cost of attending class is the $15 that could have been made by watching a neighbor's child.
Opportunity cost refers to the benefits that one gives up in order to enjoy another benefit, that is, the benefit that is sacrificed.
In this question, two benefits are given up, but the real opportunity cost is the one that have the highest value, which is the $15.
Answer: The correct answer is "A. research and development".
Research and development are <u>NOT</u> considered as one of the three primary functions that all organizations perform.
Explanation: The basic operating cycle of a company is buy-sell-collect-pay. In some cases, companies can produce the good they sell or directly re-sell it. This implies production, operation and marketing activities to increase sales and for an adequate control of these you need accounting.
Only in particular cases do companies engage in research and development, but it is not something basic.
Answer:
the military is the solution
Section 8 does not require you to pay them back