I think the correct answer from the choices listed above is the third option. When reading a poem closely to interpret its meaning and nuances, it is the title of the poem that give you clues about the theme of the poem. It is something that is closely related to the topic of the poem.
Paying attention to the title of the poem can reveal a lot about the theme of the poem. Whether it be directly, or indirectly, it can help you better understand the poem.
