Answer: Friends.
Explanation: In the first bit of the text; we can read: "Soy Juanjo de México. Mi cuate Rodrigo es de Puerto Rico. Rodrigo tiene un cuate y guareto, se llama Antón."
This says something like:
"I am Juanjo from México. My "friend" Rodrigo is from Puerto Rico. Rodrigo has a close "friend" who is called Antón"
Here the word "cuate" means something like "friend"
So the relationship that Juanjo has with Rodrigo and Anton is one of friendship, then the correct option is the fourth one.