Final answer:
The characterization of Bertha in 'Sweat' reveals Delia's indifference toward her marital problems, indicating a deep emotional numbness caused by years of abuse. This indifference and the complex dynamic in Delia and Sykes's relationship are crucial for understanding Delia's reactions and decisions throughout the story.
Step-by-step explanation:
The characterization of Bertha in Zora Neale Hurston's short story "Sweat" is used to reveal Delia's attitude toward her own marital problems, which include the abuse she suffers at the hands of her husband, Sykes. Delia's reaction to Bertha, who is Sykes's mistress, is complex but can largely be categorized as indifferent. This indifference is reflected in Delia's overall resignation towards her situation and her lack of action against her husband's infidelity. It is an element of the psychological and emotional toll her abusive marriage has taken on her.
Regarding the other aspects of the question, Delia endures the abuse due to a complex mix of societal expectations, economic dependency, and perhaps a faint hope of change. The community's reaction to Sykes's treatment of Delia ranges from pity to disdain but is largely passive. Delia's discovery of the bullwhip is a form of foreshadowing, representing a dark omen of potential violence to come. When Delia finally stands up to Sykes, he initially reacts with surprise and does not follow through with his threats, possibly due to her newfound resolve or an underlying cowardice. Delia's decision not to attempt to save Sykes in the end reflects her emotional detachment and exhaustion from years of suffering, which makes it uncertain whether she will have regrets later on.