Hello. You have not submitted the poem that this question refers to. This makes it impossible for your question to be answered. However, I will try to help you as best I can.
Figures of speech are forms of expression that deepen the meaning of the text, but that escape the denotative and common meaning of language, as they have a strong subjunctive meaning, making the text more poetical, interpretive and profound. Figures of speech are generally used to highlight a theme within the text, or a subject that is being addressed. In this case, to answer this question you must read the entire poem, understand the meaning and theme of the text, reread the second stanza, and identify the figure of speech that the stanza presents. Once you identify this figure of speech and understand it, you will be able to understand the point it is making within the poem.
Some examples of figure of speech are: metaphor, personification, alliteration, allusion, paradox, antithesis, antaclasis, among others.