Please help me answer with this, I would like an explanation to your answer.

Which is not among the style choices a writer would use, if he or she is trying to establish a formal writing style/

Which questions would most a reader identify the author's purpose for writing? check all that apply. what type of text is this? what type of reviews did the book receive? how many copies of the book have been sold? what is the central idea? how does this text make one feel? mark this and return save and exit

What is the best prediction of the meaning of thrilling based on the context clues?