The correct response that describes a literary technique employed by the author is:
B He uses extended metaphor to compare the Limberlost to other North American swamplands.
In the excerpt, the depiction of the swamp as a "big dining-table for the birds" suggests a metaphorical comparison between the swamp and a feast, creation of an imagery that evokes a sense of abundance and lively activity. This extended metaphor contributes to the rich imagery of the scene.