D is the correct answer to this question i think!
D, slowly and carefully. Hope this helps.
The answer would be "<span>Aiden is thrilled about starting a performance project on Romeo and Juliet, although he worries about getting assigned to a group of students who are poor actors." YOU'RE WELCOME :D
Sorry I took too long to answer :P</span>
Answer:
The first one is a run on sentence.
Explanation:
There are multiple pieces of information in the sentence that should be separated by a comma but aren't, so the sentence is run-on.