The thesis statement, or claim, of an argumentative essay should

a) summarize the general topic of the essay.
b) establish the focus of the essay and the writer’s position.
c) take into consideration how the audience feels about the topic.
d) contain a citation to support the writer’s viewpoint.

I think the correct answer from the choices listed above is option B. The thesis statement, or claim, of an argumentative essay should establish the focus of the essay and the writer’s position. What is important in these would be the author's side of the story or what he thinks. So, it should be B. Hope this helps.