In great britain in the eighteenth century, a series of enclosure acts were established by parliament, that broke up small farms, forced many small farmers to move to large cities in search of wage labor, and increased agricultural profits for landowners. what large-scale social system was this a part of ?

This was part of Capitalism. In capitalism, the main focus is to favor some of the biggest landlords and businessman and the interest of lower class people and minority is often overlooked. In great britain also, due to the capitalist approach, some of the few big landlords were getting more agricultural profit and small farmers were forced out to move to some large cities.

B. The author is biased against a law because it would financially  affect his business.

Explanation:

The author of the excerpt is biased. He treats environmental protection laws as if it were a strategy for politicians to end his business. Environmental laws are meant to protect the environment so that we have a comfortable life, but the author of the excerpt only cares about his company's profit and acts as if environmental laws were a bad, selfish thing.

The part of the excerpt that makes this clear is "By limiting the amount of chemicals I can pour into the local river, these politicians are trying to  drive down our productivity and put me out of business!"