It is important to know the author's purpose because knowing the author's purpose can change how the story is being told. If someone said,"Mom, I would really like this new video game for my birthday." and the author's purpose was to inform, it would be informing the mom that the person wanted the video game. If the author's purpose was to persuade, that person would be persuading the mom to get him the video game.
D. When you assign group roles, you split up the work and give everyone a job to do and they are held accountable for that part of the work for the whole group
A-2, B-1, C-4, D-3 (I think) Hope I helped!
