Is this "All Quiet on the Western Front"?
Nick idolizes Gatsby because he admires Gatby's wealth, love for Daisy and his popularity.
D. would be your answer.
Hope this helps!
Billy's father says they can't stay with grandpa and grandma cook because he and Billy's mother are getting a divorce.
Because of the fact that Billy's parents are separating, he can no longer stay with his grandparents, but rather go to a court where the judge will decide where the child will live from now on - whether that is going to be with his mom or his dad.