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.
In the first stanza of James Russell Lowell's life is :words
I think it is C.Traveling abroad
Answer:
the inauguration of the president of the United States is a ceremony to mark the commencement of a new four-year term of the president of the United States. The inauguration takes place for each new presidential term, even if the president is continuing in office for a second term.
Explanation: