I believe It’s the last one so you have it correct.
Answer:
you can use it when you need to say things like
Un: Un gato - a cat
unos: unos gatos- some/male cats
unas: unas gatos- some female cata
una: una gato- a female cat
Answer:
Explanation:
Translation to English: ___THE SON of___the wife of my dad, pero no soy su hijo
El hijo de