Las montañas. bajas bajan baja bajamos

The correct answer to this question is D, bajamos.

The answer is Bajamos, this is because nosotros gets conjugated to the -amos form.
The other answers are incorrect because bajas is to the tu conjugation and bajan is to the ustedes/ellos/ella conjugation, and baja is conjugated to the usted/ella/el conjugation

This is not a question. you are basically telling us to do the work for you. if you have any questions, ask away.

No sé que te dierano sé que te diera,por una mirada, el mundo,por una sonrisa, el cielo,por un beso,ay, no sé que te diera por un beso.veo la lunaveo la luna y la luna ve a mí,que dios bendiga la lunafound the answer in that link. if its wrong just delete my answer so you get your points bck.