It should be D! It was a friendly letter talking about how she had won the contest!
I hope all is well, and you pass! (: Good luck, rockstar! (:
That would be the imperative mood.
Answer:
adjective. willing or eager to do favors, offer one's services, etc.; accommodating: The clerk was most obliging. obligating
Possibly "Ballet is a performance dance that requires great skill and dedication."