American ideology focuses on the importance of marriage and family values and assumes that the family is at the center of almost everyone’s life. How does this compare to the way people really live?

Increasingly both marriage and the family are less central to the lives of average Americans.  

Explanation:

American has a national ideology that is called liberalism. It does not mean that we all people are in the left-wing but we are the people who believe in the set of principles. These principles were given by John Locke. John Locke believes in democracy, republicanism, and self-determinism and free expression. It is not easy to be an American who can not claim a particular ethnicity.  

Thus here in the above context, American ideology focuses on the importance of the marriage and the family values that assume the center of almost everyone's life. This can be compared by increasingly both marriage and the family are less central to the lives of the average Americans.

try something like republic or democracy joined or something because its talking about a election party.

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).