E. The mixed language hints at the poet's inner conflicts based on her bicultural heritage.
To understand why is this the correct answer we need to know more about the autho Lorna Dee Cervantes.
"Of both Mexican and Native American ancestry, Cervantes is a member of a fifth-generation California family. Her parents, concerned about prejudices against Spanish-speaking citizens in the United States, strictly forbade the use of any language but English in the home as Cervantes was growing up. Cervantes's poetry often reflects this clash between her ethnic background and the American culture around her. As a way of reflecting her multicultural upbringing, the poet often makes use of both English and Spanish vocabulary in her poems."
* Freeway 280." Poetry for Students. . Encyclopedia.com. 6 Mar. 2019
The author in the poem does not want to celebrate her biculturalism but wants to express through the use of the two languages that she is internally in conflict with her identity and does not reject any of the two cultures she has. Mexican and American.