Answer: D) the daffodils are "tossing their heads in sprightly dance"
Explanation: personification is a figure of speech that consists in giving human characteristics to non human objects (or animals). From the given options, the line from "I Wandered Lonely as a Cloud" by William Wordsworth, the one that represents an example of personification is the corresponding to option D, because the daffodils (non human objects) are tossing their heads and dancing (human characteristic).