Read the excerpt from "Song" by Ella Wheeler Wilcox. Then, answer the question that follows.
 Is anyone sad in the world, I wonder?
 Does anyone weep on a day like this,
 With the sun above, and the green earth under?
 Why, what is life but a dream of bliss?
 How does the bolded metaphor contribute to the tone of the poem?
 It makes the speaker seem afraid of dreaming.
 It reflects a feeling of boredom about dreams.
 It shows the speaker is cruel towards those who cry.
 It makes the speaker appear thoughtful about life.