Answer:
they were shooting at them...acknowledged threateningly
Explanation:
Exposition is the part of the plot structure that introduces the charachters and setting.
I would say what type of work you do. It shows what the person is interested in and what the work they do and will be doing is going to look like. It also opens up information about who they are.
I think it is personification, because personification means to make non living things sound real, and the lines 149-151 follow that. “The taut gut vibrating hummed and sang a swallow’s note.”