Final answer:
The best translation is b. Where are you going on Friday? It asks about someone's plans for the upcoming Friday.
Step-by-step explanation:
the best translation for the sentence “¿Adónde vas el viemes?” is b. Where are you going on Friday? This question asks about someone's plans for the upcoming Friday, specifically where they are going. The verb “vas” is the second person singular form of the verb “ir” (to go), indicating that the question is directed at a single person.
Learn more about Translation of a Spanish sentence