Final answer:
The writer might opt for a memoir to provide an authentic and emotionally compelling narrative that persuasively shares the continuity of traditional Inca culture, thus deeply engaging the readers.
Step-by-step explanation:
The writer might choose to record the experience as a memoir instead of fictionalizing it into a short story for a few key reasons. One of which is that a memoir can offer a sense of authenticity and personal truth that engages readers on a deeper level. By choosing to write a memoir, the writer can express her deepest feelings and share a genuine and emotionally resonant account of her experiences. Additionally, when writers incorporate cultural aspects and personal anecdotes in their memoirs, they can convey the continuity and presence of traditions, like those of Inca culture, in a way that invites readers to develop empathy and a better understanding of the larger cultural context.
Given such goals, the most apt choice from the given options would be that the writer wants to persuade readers that some aspects of traditional Inca culture continue to exist (option b), as the format of a memoir allows for a personal and culturally rich narrative that is both factually grounded and emotionally compelling.