Final answer:
To improve clarity, 'there' should be changed to 'backstage' in sentence 12, providing a clear and specific setting that adds context to the narrative.
Step-by-step explanation:
To improve the clarity of sentence 12, Lorene could choose option B, Change 'there' to 'backstage'. This revision provides a specific location which adds to the clarity and understanding of the scene. Sentence 12 currently lacks a precise setting, and the word 'backstage' immediately offers context that aligns with the narrative of preparation and performance implied by the surrounding text. Changing 'She’d' to 'She had' or 'cautious' to 'careful' does not substantially clarify the sentence, and 'debris' to 'dirt' changes the meaning without necessarily adding clarity.