Imagery, in a literary text, is an author's use of vivid and descriptive language to add depth to his work. It appeals to human senses to deepen the reader's understanding of work. In that case, "black strands grow on her head" proves that the author used imaery to bring depth and set a more poetic tone to the sentence
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I would think the answer is C standard English because gotten is use to say something like Look what you gotten yourself into or Why did you gotten me into this to.