He (Which should be El, but anyway) visto is not correct, because you are talking about someone else. Yo Tengo is correct, because you are staying that you have seen.
Answer:
Nosotros barremos el suelo "we sweep the floor."
Explanation:
Prendemos would mean "we light the ground," sacuden would mean "we shake the ground," and barren is the incorect verb form. Barren is used for ustedes, and in this situation we are reffering to ourselves and not somebody else.
