Which of the following is an important characteristic of a postindustrial economy?

a. raw materials are made into goods
b. the focus is on ideas instead of physical products
c. people do not use gold coins for purchased
d. money is exchanged for goods and services

B. The focus is on ideas instead of physical products

Explanation:

Post-industrial of economy refers to a period of economic growth that is led by Services , scientific research, and data information industry rather than manufacturing.

Since services industry do not necessarily produce physical products, ideas and creativity often become the more important driving factors to provide the costumers with a more unique possibilities.

Why other options are wrong:

- Raw materials are made into goods. This happened in an economy dominated by manufacturing, which happened before post-industrial economy.

- People do not use gold coins for purchased - This happen ever since paper money was invented. Industrialization has no connection to it.

- Money is exchanged for goods and services, this happen in all period of economy.

where is the

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).