Answer:
So, the estimated annual water consumption in Peru is 326 725 MMC. I write this amount in letters: Very good, I solved the problem Now, ...
Explanation:
The correct answer is:
A. ¿Has tratado de bucear?
Have you (singular, informal) tried to snorkel?

At end of last week, I visited (went to visit) my aunt Lilia in the country.
le ( consegui) I got her some books from the library of the university because she asked me for it . (me los pidio , asked me for them.....)
verbs are ok at the preterito perfecto simple as "fui"
hope that's what you were asking for
It think its D. pizarra but I'm not sure.