What sets off appositives in the sentence is the use of the quotation mark, comma (,). This indicates that the phrase is just an added information in the sentence, and if omitted will never change the whole thought or idea of the sentence. Aside from commas, parentheses or dashes can be used as well.
Answer:
I'd be delighted to help you with any issues.
Explanation:
<span>A literary critic's analysis of the characters and their contrasts in the play. I would say this would be the best source since presumably the literary critic would be trained in Shakespeare's plays and would be used to writing analyses from long experience doing them whereas students would not have that much experience with his plays most likely.</span>