The answer is c) It indicates what the speaker hopes to accomplish.
A specific purpose statement should be clear, concise, and indicate what the speaker hopes to achieve through the speech. "To inform my audience about three steps for managing anger in a positive way" effectively communicates the speaker's intention of sharing information with the audience in order to help them manage their anger. The statement is specific and to the point, which helps to focus the speech and keep it relevant to the audience.