Answer:
1. Este: (masculino-singular).
2. Esta: (femenino-singular).
3. Esas: (femenino-plural).
4. Aquellas: (femenino-plural).
5. Esa: (femenino-singular).
6. Aquel: (masculino-singular).
7. Estas: (femenino-plural).
8. Estos: (masculino-plural).
9. Aquella: (femenino-singular).
10. Esos: (masculino-plural).
11. Aquellos: (masculino-plural).
12. Ese: (masculino-singular).
Step-by-step explanation:
We must identify the gender referred to as the first step, then analyze whether it refers to a single person, animal or thing or if it refers to several. depending on this we can logically distinguish whether it belongs to female or male gender, and the amounts to which it refers to correctly assign the number of the singular or plural.