I would say informational text because he is merely telling his audience about about the upcoming music.
Answer: The vitamins in a blue chromis's diet can affect how brightly the fish's colors appear.
Explanation: The first sentence is stating a fact where the vitamins can affect the fish. In the second sentence it's stating how the species is described in an opinionated way.
A. Adventurous, the passage was showing adventurous.
This can only be an opinion. There are no direct answers to this question.
Thesaurus will be most helpful because it will give you new words to use in your vocabulary it will express words in new ways which will in turn help your ideas be expressed differently