Which of the following terms describes something that is evident without proof or argument?

The term "axiomatic" refers to a principle or statement that is universally recognized as self-evident and accepted without the need for proof or further argument. It embodies an idea that is inherently clear and unquestionable, often forming the basis for further reasoning or theories.

In contrast, the other terms present different meanings. "Obscure" refers to something that is not clear or difficult to understand. "Ambiguous" describes something that can have multiple interpretations or meanings, thereby lacking clarity. "Debatable" indicates that a statement or idea is open to discussion or argument, implying that it is not accepted as a given and requires evidence or reasoning to support it. These contrasts highlight why "axiomatic" is the most accurate choice for describing something that is evident without the need for proof.