This is actually a beautiful poem. The speaker in the poem is trying to say that even if the person leaves or passes on, his thoughts will still remain with her and his love will not perish. It speaks about a longing that a person has for someone and how he will never forget all the memories they've had.
I need the options to help you out with the answers.
Answer:
The correct answer to this question is "personification and enjambment." The poetic techniques that are illustrated in the opening lines “I am fourteen/and my skin has betrayed me/the boy I cannot live without/still sucks his thumb/in secret are personification and enjambment.
Personification - the skin betrayed
Enjambment - the sentences do not finish with the line
I hope that this helps! :)