Sharecropping: . meant that african-americans were paid their share daily for doing specific tasksb. was a compromise between african-americans' desire for discipline and planters' desire to learn to do physical laborc. was most popular in the old rice-plantation areas of south carolina and georgiad. became more popular because of rising farm prices that brought increased prosperitye. was preferred by african-americans to gang labor (because they were less subject to supervision)

a. meant that African-Americans were paid their share daily for specific task

Explanation:

Sharecropping, was a way of using the work of African American tenants, that began previous of the Civil War, but exploded in the Reconstruction era. Sharecropping was basically that the landowner provided the tenant with land to work, but kept the property and demanded a "share" of the "crop".  This was one of the causes of the Great Migration in the first decades of the XX century of African Americans into the urban centers of the North and West as the agricultural crisis before and after World War I devastated the American countryside and made living off the land impossible for many tenants.

intimacy, passion and commitment are the components of a interpersonal relationship emphasized in the triangular theory of love by robert sternberg.

the triangular theory of love says love can be comprehend as this componest form the vertices of a triangle.  

intimacy relates to feelings such as of closeness and connection;

passion relates the drives that brings people together, as physical attraction.

commitment relates to the being in a long-term relationship.

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).