Final answer:
La Inca is Beli's aunt and the great aunt of Oscar and Lola, making her a significant figure in The Brief Wondrous Life of Oscar Wao by Junot Díaz.
Step-by-step explanation:
The character known as "La Inca" is Beli's aunt; she has a significant familial connection to the novel's main characters. She is the great aunt of Oscar and Lola. In this sense, the correct answer to the question posed by the student would be option (b) Beli's aunt; She is the great aunt of Oscar and Lola.
La Inca plays a crucial role in the narrative of The Brief Wondrous Life of Oscar Wao by Junot Díaz. She provides a safe haven for Beli after a tumultuous period and is instrumental in raising Beli's children, making her a formidable presence in the lives of the protagonist's family.
Although La Inca is not Oscar's mentor, Lola's teacher, or Beli's grandmother, she exemplifies the strong family connections that form a core theme in the novel.