It is either A or D. It is definitely not B or C though. I would choose A.
Cool what is the question
Answer:
is it because you need a school report
Answer:
no
Explanation:
proclomation is defined as a public announcement
Answer:
Last, Colorado, Denver, Vail
Explanation:
Last year we went to Colorado and visited Denver, Vail, and two other cities.
Last is capitalized because it starts the sentence. The others are capitalized because they are proper nouns.