Final answer:
Dan Pink's tone in the speech 'Drive: The Surprising Truth About What Motivates Us' is persuasive, intended to influence the audience's perspective on motivation, using a structured argument to lead them to a new understanding. The correct answer is option (b).
Step-by-step explanation:
The tone Dan Pink uses throughout his speech "Drive: The Surprising Truth About What Motivates Us" can best be described as persuasive. Pink's speech is crafted with the intent to convince his audience to reconsider their preconceptions about motivation and embrace a more modern understanding that highlights the importance of autonomy, mastery, and purpose. This aligns with the characteristics of persuasive speech, which seeks to influence the audience's beliefs, values, or behavior. It often does so by reinforcing existing beliefs or changing them, as Pink attempts with his presentation of research and arguments about motivation.
Additionally, persuasive speech is marked by a strategic organization meant to guide the audience through the speaker's arguments in a convincing manner. Pink's organization of points—starting with debunking traditional notions of motivation and leading up to presenting his autonomy, mastery, and purpose framework—reflects this approach. The speech is not merely informative; it's structured to lead to a conversion of perspective.
Moreover, the speech does not fit as neatly into other categories such as inspiring, analytical, or informative. While Pink's speech could indeed inspire some, contain analytical elements, and be rich in information, its primary goal is to persuade the audience to adopt a new mindset towards motivation.