Final answer:
The correct answer is option c. The correct answer is option The narrator in To Kill a Mockingbird gives detailed family and background information to provide context for the characters' actions and beliefs, and to establish the story's setting which is key to understanding the social and historical environment in which the plot and themes develop.
Step-by-step explanation:
In To Kill a Mockingbird, the narrator provides extensive information about her family and background for several reasons. The most pertinent of these reasons is c) To provide context for the characters' actions and beliefs. By offering details about the family and background, the reader gains insight into the motivations and perspectives of the characters within the story. Additionally, such exposition helps to establish the setting of the book, which is critical for understanding the time and place where the story unfolds.
The setting interacts with the plot and character development by informing the social norms, challenges, and conflicts the characters experience. For instance, the setting of Maycomb, Alabama, during the Great Depression is integral to understanding the socio-economic pressures and racial tensions that shape the characters' lives and decisions. Background information also lays the groundwork for the reader to appreciate the nuances of the plot and the gravity of the thematic elements at play, such as racial injustice, social inequality, and moral growth.