Answer:
Thesis statement.
Step-by-step explanation:
An argumentative writing can be defined as an expression of a writer's position (stance) on a subject matter or topic. Therefore, when writers engage in an argument or write an argumentative essay, they make use of a claim to state or express their opinions about the subject matter or topic.
A claim can be defined as a statement that is used by a writer to prove, substantiate or support an argument. Thus, a claim is an assertive statement expressed by a writer to prove that an argument is true or real.
This ultimately implies that, when writers engage in an argument or write an argumentative essay, they make use of a claim to state or express their opinions about the subject matter or topic.
Also, a thesis statement is a brief, concise summary of a claim or main idea stated in a literary work. It is usually written at the conclusion (tail end) of an introduction in an article.
Hence, a thesis statement is another term for claim in argumentative writing.