Most nouns ending with blank are masculine. most nouns ending with blank are feminine.

Most nouns ending in -o are masculine and most nouns ending in -a are feminine.

I don't know how to answer this but maybe. This will help.
If it were a man for example it would be El
If it were a woman it would be Ella
Masculine used in a sentence: A el le gusta la comida.
Feminine used in a sentence: A ella le gusta la comida.
I hope this helped. If you don't feel confident that this is the answer it's fine.

El saco  de dormir  is the anwser

Agood essay idea would say you plan on moving to a spanish speaking place to learn more about it and stay connected, and for the second paragraph say they it will benifit you because professionally, you will have more job opertunities, because more and more places are starting to hire bilengual people, and that learning two ore more languages actually stop dementia from forming in your brain at an early age. i would love to do the essay for you, but we would both get in trouble for plagirism.