Answer:
A. Blanquear
Explanation:
Blaquear comes from the word white and she has their teeth yellow (amarillos) even whe she brushes them so she has to make something to make them more withish.
Answer 1) Salto : La ubicación de aguas termales de Uruguay.
Answer 2) Chivito Un sándwich uruguayo hecho de bistec.
Answer 3) Fray Bentos : La ubicación de las controvertidas fábricas de papel en Uruguay.