Respuesta :
Answer: A. The tone shifts in the last two lines.
In this sonnet, the tone shifts in the last two lines. The reason this is the case is because the rhyme scheme changes, which forces us to modify our tone when reading it. This is because the last two lines of a Shakespearean poem are a couplet. This means that they are two lines that rhyme with each other, altering the rhyme scheme of the rest of the poem.