Cuál es la pregunta q quieres una respuesta para
The answer is COSER, which means 'to sew'.
There you go.
Valeria has answer "Tengo 16 anos", So Juan asked her about her age.
"Tengo" is a from of "Verbo TENER": (Yo) Tengo, (Tu) Tienes, (El/Ella) Tiene. Since this is a direct dialogue, We should use "Tu Tienes".
So, the correct answer is: ¿Cuántos años tienes?
Hope this Helps! :)
“Usted” is for a singular person alone
“Ustedes” is for multiple people
C.) Nadie
That is the answer