Answer: d. claims that when another group is attractive and powerful, we adapt our communication style to their speech behaviors and norms
Step-by-step explanation:
Howard Giles' Communication Accommodation Theory claims that when another group is attractive and powerful, we adapt our communication style to their speech behaviors and norms.
According to this theory, Howard Giles believed that as individuals, we adapt to the communicative behaviors of each other so that ther can be a reduction in our social differences.
Therefore, the correct option is D.