1. "They want the boots" = D. quieren las botas.
Quieren is short for Ellos/Ellas/Ustedes quieren, which means They want. A is incorrect because it refers to You = Vosotros. B is incorrect because it refers to third person singular - He/She/It = El/Ella/Usted. C is incorrect because it refers to We = Nosotros.
2. "Prefiero la gorra roja" = B. I prefer the red cap.
This is becaise Prefiero is short for Yo prefiero, which is the first person singular I.
3. El cadejo is B. a mythical dog.
It is a supernatural being in Mexican folklore.
4. B. Sawdust is used to make special carpets in Honduras. This process was introduced in 1936.
Uno de los principales componentes de la autonomía es la responsabilidad.
Cuando no les dejan hacer determinadas tareas por si mismos,pensando que no son responsables.
Espero y sirva de algo:)