Hey there! I'm happy to help!
QUESTION 1
All of the answer options in this question come from the word vosotros, which is an informal way of saying "you guys" in Spain, but it's also always used in the Bible. Kind of ironic.
Anyways, we're trying to say that those books are yours to this group. Because the accent is know on the first o in vosotros, it splits into ue, so we're so it's sounds like vuestro/a/os/as.
Our answer has to match what the books are. Los libros is plural and masculine, so this vuestr- root must be masculine (having an -o in the suffix) and end with an s because it is plural. So, the end is os. The answer is vuestros.
QUESTION 2
Translate: that apple
The world for the apple in Spanish is la manzana. This means apple is a feminine word.
Este, esta, and esto mean this, so the first and third options are wrong.
Aquel means that, but it has to be the feminine version aquella to match la manzana being feminine.
Esa means that and it is feminine, so the answer is esa manzana.
QUESTION 3
The words tuyo and tuya translate as yours, like "is it yours?". You don't say it is yours cat, so the 3rd and 4th options are wrong.
Tus is plural, but we are talking about one cat, not many, so this is wrong.
Therefore, the answer is tu.
QUESTION 4
When using the word "that" we can use the words eso or aquel. In terms of pointing out a physical object, eso is used when you're pointing at something by another person, such as saying that you like that shirt they're wearing. Aquel would be used if you're both far away from the thing. If you and friend both said "look at that display over there", then you would use aquel.
Note that eso and aquel are both neuter words. They signify something in general without clarifying what it is. We would use eso in "That would make me happy" because the sentence doesn't specify if whatever "that" means is masculine or feminine or if it is plural, so we just use eso. If you said that place would make me happy, you would switch it to ese because place in Spanish is lugar, which is masculine. For feminine it is esa. For masculine aquel you use aquello, and aquella for feminine. You put an s on the end to make it plural.
So, if that table is way over there, we will use aquel, and since table is feminine, we will say aquella. The answer is aquella mesa.
QUESTION 5
The words mi and mis mean "my" and we are looking for the word "mine", because the sentence wants us to say those shirts are mine. So, the third and fourth options are incorrect.
Mío/mía means mine. The word for short is feminine so we will use mía, and since it is plural we put an s on the end: mías.
Have a wonderful day! :D