The indefinite article would be el which is he in spanish because it ends with an o which means it is a male item
Yo- é
tú- aste
él/ella/ud.- ó
nosotros- amos
vosotros- asteis
ellos/ellas/uds.- aron
The answer is C
A means teacher
B means grandpa
C means Waitress
D means silverware I think
