Final answer:
The voice of the cannibal spirit that possesses the Hamat'sa's body is represented by the sound of thunder, reflecting the spirit's powerful presence within the story.
The sound of the ocean becomes the actual voice of the cannibal spirit that has possessed the Hamat'sa's body. In literature, authors often use the sound of the ocean to create a specific mood or symbolize certain themes. In this case, the sound of the ocean represents the presence and power of the cannibal spirit.
Step-by-step explanation:
The sound that becomes the actual voice of the cannibal spirit that has possessed the Hamat'sa's body is the sound of the thunder. This symbolic transformation is typical of the way natural elements are often represented in literature and mythology as manifestations of supernatural or spiritual forces. The thunder, with its powerful and commanding presence, serves as an auditory symbol of the cannibal spirit's voice, enforcing its possession and its presence within the narrative.