Answer: B. Words like phantasm, bizarre, and delirious create a world that doesn’t seem real.
In this excerpt, Poe wants to describe a world of enchanting visions, and illusory experiences. He wants his descriptions to play with the senses of the reader and allow him to imagine what an experience it would be to see all this. By using words such as "phantasm," "bizarre" and "delirious," the author is able to describe a world that does not seem real, and instead, resembles that of a dream.