The correct answer is: an extreme political ideology.
Indeed, the movement’s ideology was a very dogmatic blend of several ideologies and outlooks. They were heavily Stalinist and Maoist in their leftism; extremely xenophobic against both foreigners and national non-Khmer minorities and extremely agrarian.
With regards to their Stalinist/Maoist outlook they believed in absolute obedience to the party and its leaders, with a set of inviolable strict rules and laws and the belief that the ends justified any means.
They loathed national minorities as they saw them as a stain on their national Khmer purity and they despised foreigners because they refused to ever be colonized again, whether by Westerners or Asians.
They also considered that urban, capitalistic society was a disease and sought to eradicate it by eradicating its people.
Slavery and the start up of the government
The symptoms of farmworker exploitation and the more flamboyant aspects of farmworkers’ efforts to gain fair contracts from the growers have become quite well-known. Much less known by equally important is a story which deals with the nitty-gritty of the farmworkers’ struggle for economic dignity: their efforts to form a nation-wide farm workers union.
Farmers were overproducing therefore it their crops lost their value.
A is the correct answer, as noted.
Samuel Adams was the leader of the Boston based Sons of Liberty and worked to lead protests against British taxation of the colonies after the 7-Years War.
One of those protests was the Boston Tea Party.