What phrase indicates Twitty’s change in behavior as noted in the text?

The phrase "extremely polite" reflects a noticeable change in Twitty's behavior, suggesting a shift away from previous tendencies or attitudes. In the context of the text, this phrase implies that Twitty is exhibiting a level of consideration and respect that may not have been present before. This transformation in demeanor can signal a development in his character, indicating growth or a response to the circumstances around him. The emphasis on "extremely" also underscores the significance of this change, thereby drawing attention to how markedly different Twitty's behavior has become, compared to his earlier conduct.