What is the best definition for the word definitive?

The term "definitive" refers to something that is conclusive or of the highest quality, often regarded as the most authoritative or ultimate example of something. It implies a sense of finality or completeness, leaving no room for doubt or uncertainty. The choice "ultimate" aligns perfectly with this meaning, as it conveys the idea of being the best or most important, representing a final or decisive point.

In contrast, the other choices do not align with this meaning. The term "absurd" denotes something that is unreasonable or nonsensical, while "incomplete" suggests something that is not fully finished or lacking necessary parts. "Preferred" indicates a liking or favor towards one option over another, which does not convey the finality or authoritative context associated with "definitive." Therefore, the definition that best encapsulates the meaning of "definitive" is "ultimate."