Answer:
(A) A ellos les gusta estudiar en la biblioteca.
A Guanacasco is a brotherly fellowship, so I believe that is D. Hope this helps you!
Answer:
Explanation: The levels of language are the registers used to speak or write, they are the following: popular, colloquial, formal, vulgar and cult. Here is a short dialogue using the language levels:
María: Hello, Santiago, I have missed you very much.
Santiago: Hello Maria, if you knew how much I have missed you too, tell me, what have you done?
María: Working with you Luisa, and you?
¿Que te gusta hacer? - What do you like to do