Which type of American would be the least likely to support Marxism?

a socialist

a factory worker

a factory owner

a poor person

One answer that can be definitely rejected is the factory owner: Marxism would remove them from the position so they would not support Marxism.

The best answer is a factory worker: Marxism is specifically targeting factory workers, who would have the power in Marxism (as a group, since they would be united in a party).

A socialist is an interesting option: socialism is a political system that has a very close similarity to Marxism. However, I think that this is not the best answer: a socialist would be likely very convinced of their views, and would not agree with the more extreme Marxism.