D. A colder climate Buck has never experienced
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:
A.
Explanation:
Because its the only one that makes sense. You cant do anything till you know what the project is about. Hope this helps:)