Which of the following serves as the best specific purpose statement for an informative speech?

The best specific purpose statement for an informative speech is focused on delivering clear and detailed information to the audience. A statement that specifies how airport security is staffed and trained aligns perfectly with the goals of an informative speech, which aims to educate the audience by providing them with factual details, processes, or explanations.

This specific purpose is effective because it sets a clear focus on what the speech will cover, allowing the audience to understand precisely what they will learn. Instead of making general claims or persuasive arguments, this option provides a clear and actionable topic that can be expanded upon with supporting data, examples, or illustrations.

In contrast, the other options either suggest an intent to persuade or lack specificity. While some mention the functionality or necessity of airport security, they do not focus on providing information in a straightforward manner, which is essential for an informative speech. Thus, the chosen statement serves well to fulfill the requirements of clarity, specificity, and educational value that are fundamental in public speaking.