<span>D. They are written in the format of a business letter.</span>
Astronauts hope this helped
Answer:
Based in oral tradition with no known author. Anytime and anyplace (once upon a time in a place far away). Common ending (they lived happily ever after). Often magical.
Explanation:
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The essential appositive in the sentence "astronomer maia mitchell discovered a comet in 1847 and went on to become the first professional female astronomer in the united states," is Maia Mitchel. The last option is correct.
An appositive consists on a noun or noun phrase that renames another noun right beside it. The appositive can be a short or long combination of words.
In this particular case, the words Maia Mitchell which is a proper noun is renaming the noun astronomer, which is right before it and constitutes the subject of the sentence.