"Why do researchers often trust the reliability of information obtained from scholarly journals, major newspapers, and well-known magazines? Why should researchers use caution when accessing information from Wikipedia, online forums, and blogs?"

There are two main reasons why experts tend to trust the reliability of information obtained from scholarly journals, major newspapers and well-known magazines, but use caution when accessing information from Wikipedia, online forums and blogs.

The first reason is that the sites they consider trustworthy are written by experts in their field. This means that they are likely to be well-informed about the subject they are discussing. On the other hand, the other type of sources can be written by anyone, including people with no real knowledge in the area.

The second reason is that the trustworthy sites are peer-reviewed. This means that the information presented there is checked by other knowledgeable people. This system does not occur in the other type of sources.

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).

the values of the selma marchers was to bring   their ability to vote into law. mlk was not hat march, which was protesting toward lbj