To choose the best response to how Stanza 2 develops the theme of the poem, we need to consider the specific content of that stanza. However, based on the options you've provided, the one that generally aligns with a common poetic theme involving the passage of time and its effects on the speaker's emotional state is:
B describing that the speaker’s worries persist day and night.
This option highlights the continuity of the speaker's emotions and reinforces the theme of enduring struggles or concerns, regardless of the time of day. If the stanza primarily focuses on the idea that worries or thoughts do not change with day and night, this response would fit well.
However, if the stanza specifically emphasizes the speaker's changing feelings or perspectives, then:
C revealing that the speaker feels differently at different times of the day could also be a strong choice.
Without the specific text of Stanza 2, it's best to select the one that most closely aligns with its content.