When a verb is conjugated, and e is the last stem vowel, and it's stressed, e changes to ie
The answer would be "chistosos" because it is another word for saying divertidos which is the word preceding the and or "y" in the sentence. They both mean fun/funny.
Porque la educación depende de la calidad de la información producida
This is up to you and what your paper says, but the translation is:
We do a project in the English class.