Answer: b) thus the squire will learn to be a good landlord, and grow popular among his tenants, the mother will have eight shillings neat profit, and be fit for work till she produces another child.
This is an example of satire. Satire is a type of humor that uses exaggeration and ridicule in order to mock the vices and follies of an individual, a group of people or society at large. Satire often has the intention of shaming individuals into changing their behaviour. In this case, the author uses satire to argue that a family would benefit and be much happier if they sell their child so that he can be eaten by the rich.
These individuals are fighting because they have conflicting ideas. One side believes that white people are superior to every other race, while the other believes all races are equal, and not one is better than the other.
It is because of this strong disagreement that these people are at each other's throats. Add in an immense passion for your beliefs, and that can spark violence.
Hopefully, this helps! =)