Final answer:
The subject matter explored in the provided excerpts primarily deals with issues of race and identity as characters confront racism and the challenges of navigating mixed heritage in a prejudiced society.
Step-by-step explanation:
The complex themes presented in the excerpts focus on racial identity, societal expectations, and personal struggle within the context of race relations. These narratives delve into the psychological and emotional turmoil of characters grappling with their racial identity and the reactions of the society around them, highlighting the racial tension that affects their personal relationships and self-perception.
The characters in these stories face challenges related to mixed heritage, racial prejudice, and the pursuit of freedom and self-determination in a world that often judges individuals based on the color of their skin. The overarching theme is the exploration of race and its impact on identity, relationships, and societal roles, with characters confronting the stark realities of racism and navigating the complexities of personal identity in a prejudiced society.