I believe the answer would be la and the only reason I say it is because José se la pone.
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! :)
Answer: use google translator or any other translator
Explanation:
google and other apps the plug
B translates to: Take out a sheet of paper. Sacar is conjugated as ellos/ellas/Uds. in the subjunctive (Saquen).
C translates to: Raise your hand. Levantar is conjugated as ellos/ellas/Uds. in the subjunctive (Levanten).
D translates to: Repeat, please. Repetir is conjugated as ellos/ellas/Uds. in the subjunctive (Repiten).
E translates to: Open your books. Abrir is conjugated as ellos/ellas/Uds. in the subjunctive (Abran).
The answer is A. Siéntense (plural form) translates to sit down.