Answer: B) To muse.
Explanation: an infinitive verb is a verb with the word "to" in front of it, and that can act as a noun, an adjective or an adverb. When we use an infinitive verb, "to" is a part of the verb and not a preposition. In the given sentence, the example of infinitive is "to muse" because "muse" is a verb. The phrases "to town", "to college" and "to university" aren't infinitive because they are not verbs, they are prepositional phrases.
Explanation:
the party was ruined by him
