Final Answer:
He thinks she will be tempted to change her lines.(Option b)
Step-by-step explanation:
Hurstwood's thoughts about Carrie's upcoming performance hint at his concern regarding her potential temptation to deviate from the scripted lines. Throughout the narrative, his observation of Carrie's behavior and demeanor suggests an underlying apprehension regarding her adherence to the planned performance. He seems to anticipate her inclination to make spontaneous changes, indicating a lack of confidence in her ability to stick to the script.
Hurstwood's contemplations stem from his understanding of Carrie's nature and past behaviors. He might have noticed tendencies in her to stray from prescribed paths or to improvise, leading him to believe she could be tempted to alter her lines during the performance. This deduction is supported by his keen observation of her character traits and his own experiences in dealing with her, portraying a sense of concern about potential deviations that might impact her performance negatively.
Furthermore, Hurstwood's apprehension could also be influenced by his vested interest in Carrie's success. His involvement in her career and personal life might contribute to his heightened sensitivity towards any potential risk factors that could affect her performance. Thus, his belief that Carrie might be tempted to change her lines reveals his underlying worry and concern for her success in the upcoming performance.