The answer is no because Brasil's official language is Portuguese
Ser is who you are. for example, "Yo soy mexicana." (I am mexican) which is to be something or someone. Estar is your state of action as in location . For example, "Yo estoy en la tienda" (I am at the store".
The answer is D - La conozco
That question isn't Spanish.
Hay Una Grande Fiesta Para El Cumpleaños De Mi Abuelo.