Final answer:
Anaya's point is best expressed by the idea that Mexican American writers are responsible for preserving their cultural heritage through their literary works, using their unique cultural perspectives to enrich the fabric of American literature.
Step-by-step explanation:
The statement that best expresses Anaya's point is that Mexican American writers must preserve their cultural heritage through literature. The given resources reflect on various cultural heritage preservation methods and the complexities of cultural identities within the United States. Whether it is celebrating ethnic-specific holidays, preserving languages and culinary traditions, or discussing the mix of cultures as seen in Mexico, authors like Sandra Cisneros exemplify the possibility and importance of integrating diverse cultural backgrounds into their work, thereby keeping the unique heritage alive in a multicultural society.