The correct part of the sentence the teenagers went to town to muse over whether going to college or to university was the better choice, is to muse.
Infinitive refers to a base form of a verb which has no tense and is not even conjugated yet it has the word 'to' in front of it and can act as a noun, as an adverb and or as an adjective.
Thus, in the sentence given above, the infinitive is 'To muse' and that is because muse is a verb. The other phrases are not verbs rather they are prepositional phrases.
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Question- Which part of the sentence is an infinitive? The teenagers went to town to muse over whether going to college or to university was the better choice.
