I would say D. because revising is a process in which you want to correct your writing and make it stronger.
A and C are correct options.
There is no need to imitate Reagon and it will make it just an audio tape. Also, no need to add slangs as there would be teachers and other members there.
Answer:
1 day before: It's the day before my birthday and I can hardly wait! I chose out a really good looking outfit for my birthday and I also decided I want ice cream cake. All my friends will be there and we will play games and have fun!
on the day of your birthday: I'm finally (?)! I bet my cake is gonna be delicious! My friends are here and we are about to get in the pool then I'm gonna show them my cool toy that I got from my parents for my birthday! Today is the best!
P.S. the question mark means you can put whatever age you want.
The real question is do you like him the way he likes you