The translation for that sentence is: Who is the teacher? So you answer it with a name. Since it is a teacher you must use Mr., Ms., or Mrs. in this case, maestra is feminine so you'll need to use Señora(Mrs.) or Señorita(Ms.).
Answer: You didn't give answers so i would say "MANTA"
translation:
O We walked for six hours among the tall green trees of Selva Monteverde. O We were listening to the white waterfall falling between the rocks and the vegetation of Pailón del Diablo.
Last week, we were looking around the blue and white ice mountain of San Rafael.
We looked at the animals, the water and the green vegetation in the Los Llanos plain
Explanation:
Soy alvearence, fue un gusto haberte ayudado!