Chica is feminine... reservada is feminine... so which of your options are feminine? Ella and la. Ella means she so it can't work, as that would mean she girl is very reserved. La is the femenine the. So that is your answer.
Answer:
im not sure about #1 but i know #2 and 3
Explanation:
#2= ¿Sabes dónde está su nuevo software?
#3= cuidar
Answer:
Usted puede entrar,pero favor Quitarse los zapatos
Explanation: