Final answer:
The correct response to the question "Adónde fuiste anoche?" is "fui" which means "I went" in English.
Step-by-step explanation:
The question is asking "Where did you go last night?" and provides three options for a response. The correct answer is "B. fui" which means "I went" in English. The verb "fui" is the past tense of the verb "ir" which means "to go" in Spanish.
Learn more about Spanish verbs