What literary technique is prevalent in the storytelling of "The Giver"?

In "The Giver," symbolism plays a crucial role in the narrative, particularly the symbolism of color. The story is set in a dystopian society where color and emotions have been suppressed in the name of conformity and order. The protagonist, Jonas, begins to experience color through his training with the Giver, which symbolizes the awakening of personal feelings, individuality, and a deeper understanding of life. The gradual introduction of color to Jonas reflects his journey toward enlightenment and the stark contrast between a vibrant world of emotions and the dullness of his controlled environment. This use of color as a symbol significantly enhances the themes of the story, such as the importance of memory, choice, and the essence of being human. The other options do not capture this central theme as effectively.