Respuesta :
Answer:
D. Sonia Sanchez, an American poet, has written more than one dozen books of poetry.
Explanation:
An appositive is a noun that renames another noun. An appositive phrase consists of an appositive and its modifiers.
In D, the appositive phrase 'an American poet' renames the subject of the sentence 'Sonia Sanchez'.
This is a nonrestrictive appositive phrase. It is set off with commas because the information it provides is not necessary for identifying the noun it describes (Sonia Sanchez).