"You are young."
Translation:Ustedes son jóvenes.
Why wouldn't "Tú es jóven" work? The only correct answers shown both used the plural, but there's no way to tell in English if "You are young" refers to a singular or plural second person.
though, now I think of it, I should have said "tú ERES jóven," but that should be one of the suggested correct answers, too (as should be a singular "usted"), right?
The verb set means "to be" in a permanent state. You won't always be young, so why is estás not an acceptable answer?
"Sois jóvenes" or "Vosotros sois jóvenes" should also work, but only in Spain, not in Latin America. I miss the vosotros altogether in Duolingo Spanish.
Why thank you! Yes, yes I am quiet young and dapper aren't I? Thank you for helping me to see the light!