Final answer:
Roxana has a voice and articulates her perspective in her letters to Usbek, reflecting a key point of the characters' interaction.
Step-by-step explanation:
The question pertains to the epistolary novel 'Letters of the Mejtans' which features the correspondence between characters Usbek and Roxana. Based on the options presented, it is most accurate to say that Roxana has a voice and expresses her thoughts in her letter to Usbek. This is true in as much as her character is given the agency to articulate her perspective in the letters she writes.
However, whether Usbek's travels lead to a change in his perception of Roxana, or if Roxana's freedom is entirely reflected in her ability to make independent choices about her destiny and sexuality, cannot be definitively determined from the provided context. It is clear though that Usbek believes in the patriarchal structures of his time, and the nature of his response to Roxana's assertion of her voice within the narrative could reflect his adherence to those societal norms.