Which option represents the best specific purpose statement for a speech?

The best specific purpose statement for a speech is one that clearly defines what the speaker aims for the audience to achieve by the end of the presentation. In this case, the selected statement articulates a measurable outcome, indicating that the audience will be able to list the top three causes of global warming. This specificity makes it a clear and focused objective that guides the speaker in crafting the content of the speech.

A strong specific purpose statement not only identifies the topic but also establishes an expected result that can be assessed. By stating a desired action for the audience (listing the top three causes), the speaker sets the stage for an organized and purposeful presentation, ensuring that the content will be relevant and pertinent to achieving that goal.

In contrast, other options provide more general or vague intentions. Discussing global warming and raising awareness about climate change are broad topics without a measurable outcome, while explaining the causes of global warming, while more specific, does not clarify what the audience will be able to do with that information. By focusing on what the audience will be able to achieve, the best specific purpose statement encourages clarity and engagement in the speech development process.