By involving the narrator with an odd cast of characters <span />
Chrysanthemums are symbol of life and beauty. In the story it symbolizes energy and sexuality. The same happens with Elisa. She lives a boring life and an unhappy marriage and she needs attendance. She needs to find herself. She commits to gardening because it is there where she can find her true self. Both, Elisa and the Chrysanthemums, need love.
I think it's B. A news article
The speaker is most likely going to be the author, as the usage of "I" is constant in the poem.
Therefore the author William Wordsworth is most likely your answer
hope this helps