Answer: It looks like you just need to cut off the last vowel (and consonant if there is one) of the word.
For number one, it's "perezosísimo"
For question 2, it's "aburridísimo"
For question 3, I think you do the same but keep it plural, so "interesantísimos" I would imagine.
la respuesta es b. Colombiano
The answer is EN LA HABITACIÓN, TAMBIEN HABIA UN SECASOR DE PELO MONTADO EN LA PARED. The paragraph is describing what the hotel room and hallway have.