c) hyperbole
A hyperbole is an over-exaggeration. In this phrase, it is highly unlikely that the little city in Georgia has been sleeping for "forty thousand years" especially considering that the United States is only 242 years old. If personification were an option, it would also be a great choice. Personification is giving non-human thing human-like traits. In this phrase, the city (non-human) is being given a human trait (dozing).
The other options: an allusion is a reference to another piece of literature or other published work. A flashback is an interruption that tells about something that has already happened. Rhyme is a group of words that sound similar (bone, cone, phone).
<span>blood comes bubbling from the water
The Danes think that Beowulf has been slain, because they see strong waves and blood bubbling up from the monster's lake. They assume that Beowulf has been overtaken and slain by the monster. They do not expect him to return.</span>
The reason why I believe that the author Maya Angelou included this passage is because she wanted to explain to us her emotions about the connection she had.