Final answer:
Hurston's purpose in using the motif of voice in 'Their Eyes Were Watching God' is to highlight the protagonist's journey towards empowerment through self-expression and breaking free from societal restrictions.
Step-by-step explanation:
Zora Neale Hurston's use of the motif/theme of voice in Their Eyes Were Watching God serves to underscore the journey of the protagonist, Janie Crawford, towards self-realization and empowerment. The theme of voice in the novel is intricately linked with the idea of self-expression and the struggle to find one's own identity amidst societal expectations. Hurston emphasizes the importance of finding a personal voice as a source of power and liberation, which is exemplified in Janie's evolution from a silent young girl to a woman who speaks her mind and lives life on her own terms. For example, the quote "She had waited all her life for something, and it had killed her when it found her" reveals how Janie's voice and desires were suppressed until she decided to take control of her life. Similarly, in Sweat, Delia Jones discovers her own voice and strength to stand up to her abusive husband, demonstrating courage and self-liberation.