Tenochtitlan was built on Lake Texcoco
Hello! I'm a native speaker. The answer is 'a'.
I think is "son" hope this helps
Answer:
Los turistas tienen mapa ........... This should be: Es su mapa.
Usted tiene cuadernos. ............. This should be: Son sus cuadernos.
Nosotros tenemos papelera ..........This should be: Es nuestra papelera.
Remember that the singular/plural conjugation must affect the possessive pronoun.
