Which word best describes the main idea or central argument of a text?

• A. Theme
• B. Main Idea
• C. Claim
• D. Thesis

Answer: (D)

The idea being tested is recognizing the author's central argument as expressed in the thesis. The thesis states a specific, debatable claim that the author intends to prove with evidence and reasoning throughout the text. It sets the purpose and direction of the entire piece.

That’s why the best choice is the word that names that position: the thesis. It goes beyond just describing what the text is about (main idea) or the broader message or lesson (theme). It’s an arguable claim the author will defend with facts, analysis, and reasoning.

For example, in a history essay, a strong thesis might be: economic differences and political conflicts over slavery helped push the nation toward war. This isn’t just a topic; it’s a stance the author will support with evidence. The main idea would be the general topic of why the war happened, and the theme would be a broader message about conflict or identity. The term claim refers to a statement that can be argued, but the thesis is the specific, overall argument that the text is built to defend.