19 is A , 18. Is C. 21. Is A
Your answer is A because an argumant is required for your own opinion
If you are in k12, the answer is:
"Ben looked forward to discovering which route they would take and which unique places they might visit this year."
To entertain. The books are literally a fantasy series. I suppose it also helped her through her depression and such, but her actual purpose was to entertain and teach some morals suck as the importance of friendship.