Respuesta :
The first one is A because they were supposed to put a comma after "but". I'm not so sure about the second one.
8. Incorrectly punctuated sentence: Sarah is busy today but she can go to the park with you tomorrow. There should be a comma before the word "but".
9. Incorrectly punctuated sentence: Reesa is wearing a dark, green sweater. There shouldn't be a comma before the word "green".