Which pair is NOT an example of correlative conjunctions?

Correlative conjunctions are pairs of conjunctions that work together to connect words, phrases, or clauses that are grammatically equal or similar. The correct answer identifies a pair that does not function as a correlative conjunction.

The pair "however-nonetheless" serves as transitional words rather than correlative conjunctions. They are used to show contrast or an opposing idea but do not work together to link two parts of a sentence in a grammatically parallel structure. In contrast, the other options each contain pairs that do operate as correlative conjunctions: "either-or" presents alternatives, "neither-nor" negates both options, and "not only-but also" emphasizes an addition to an idea.

This distinction is important in recognizing how conjunctions function in sentences, as understanding correlative conjunctions can help create fluid and clear connections between ideas.