Final answer:
The conflict in 'One Voice' by Melissa de la Cruz is characterized as Character vs. Society, where the character confronts challenges posed by societal expectations or norms.
Step-by-step explanation:
The conflict in 'One Voice' by Melissa de la Cruz is an example of Character vs. Society. This type of external conflict occurs when a character faces opposition from societal norms, laws, or social expectations. In these stories, characters often struggle with social issues such as injustice, class disparities, or oppressive government policies. The nature of conflict in literature is critical to the development of the narrative, driving the plot forward and fleshing out the protagonist's journey.