Final answer:
The word 'soliloquy' correctly completes the sentence, suggesting that Nell was absorbed in her own thoughts and inner dialogue.
Step-by-step explanation:
The word “soliloquy” in the options correctly completes the sentence. A soliloquy is a dramatic device where a character expresses their thoughts and emotions aloud to themselves, often when they are alone on stage. In the sentence, Nell's soliloquy made the people she encountered wonder if she noticed them at all, it implies that Nell was so absorbed in her own thoughts and inner dialogue that she appeared unaware of the people around her.
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