Im not sure but you just have to write "the" the correct way for the word like casa is La casa and dormitorios is un dormitorios. Hope this helps!
Answer:
<u>Eres </u><u>Mexicano.</u>
Explanation:
Estas is a state of being somewhere/doing something
Example:
Are you playing soccer? = Estas jugando futbol?
Eres is a state of being something
Example:
Are you intelligent? = Eres intelligente?