The correct answer is B. Metaphor
The land is not really a mother to anyone. Mother is used here as a metaphor for the land in which free people are born and nurtured. It's still a piece of land but it is being mentioned as a mother to attribute the warm feeling of mother caring for you to the land in which the free are born.
Alliteration is found in the words "woman wailing." Alliteration is the repetition of sounds.
Answer: The purpose of an excerpt is to be a trailer for a book.
Explanation: A excerpt can be like a little sneak peak that prepares the reader for the whole story. An excerpt can also help the the reader understand and memorize the subject the author is writing about.