John loves to sleep late in the morning. he also knows that school is important. this morning, john chose to wake up and get to school on time. in doing this, he gave up the opportunity to sleep in. the opportunity cost of john's choice to go to school is two or three hours of sleep. ana loves to go camping with her family and is looking forward to their trip next weekend. ana learns that her good friend is having a sleepover birthday party the same saturday as the trip. for ana, what would be the opportunity cost of going to her friend's party? why?

For Ana, the opportunity cost of going to her friend's party would be not to camp with the family over the weekend.

Explanation:

Opportunity cost is a term used to indicate the cost of something in terms of a foregone opportunity, that is, the cost of waiver of a situation in exchange for another situation.

So, the cost of opportunity for Ana, if she goes to her friend's birthday party, is giving up the opportunity to camp with her family over the weekend. This is because the two situations happen in the same period of time, so Ana will have to renounce one of the situations.

answer; /// i believe the correct answer is (when one group has an extremely high score at pretest;

marginal cost is a microeconomic measure that us to evaluate the extent to which the level of production of a good is sustainable in accounting, that is, to how many quantities the company plans to profit from the production of the good.

the concept of marginal cost is simple, it means the cost of producing one more item. for example, in the case of pies, the marginal cost is the cost of producing one more pie than those that have already been produced.

it is important to understand that productive activity influences marginal cost. the marginal cost of some goods can be very high, while others may be insignificant. for example, the marginal cost of producing an extra plane is very high. already the marginal cost of a water company to provide 1l more water is derisory.

in the case of pies, the cost involves the inputs, the labor and the fixed cost, which involves the fixed space of the bakery. the level of production initially has the marginal cost decreasing because there is space and manpower available. however, to produce more you have to hire more workers and buy more inputs. if physical space is limited, workers will conflict with places, inputs and their productivity will decrease, meaning there is an optimum point of production for each level of space and manpower. from this point on, the productivity of the workers will be getting smaller because of lack of space, so that the marginal cost of producing one more pie will be increasing. so, although you have not posted the chart, but if you have the answer, you can see that my explanation goes according to the marginal cost curve that will increase from the 4th pie, answer (c).