PLEASE HELP!!!!!

1. What subject pronoun would you use when talking about my grandmother?
a.ellas
b.yo
c.ella
d.vosotras

2. What subject pronoun would you use when talking about Marcos?
a.ellas
b.ellos
c.él
d.ustedes

4. What subject pronoun would you use when talking to your parents?
a. tú
b. ellos
c. usted
d. ustedes

5.What subject pronoun would you use when talking about María y Ana?
a. ellas
b ella
c. vosotras
d. nosotras

medals to helpers and ill become a fan