Which of the following enhances the emotional impact of a speaker's message?

Facial expressions that align with the message being conveyed significantly enhance the emotional impact of a speaker's presentation. When a speaker uses appropriate facial expressions, it helps to convey feelings and emotions more authentically, allowing the audience to connect on a deeper emotional level. This non-verbal communication can amplify the message, making it more relatable and persuasive.

For instance, a smiling face while discussing positive outcomes can evoke feelings of hope and happiness in the audience, while a frown or serious expression during a discussion of difficult topics can underline the gravity of the subject matter. Such congruence between verbal and non-verbal cues is essential for effective communication.

In contrast, options that focus on clear verbal communication or the strategic use of vocal fillers may help in clarity or maintaining engagement, but they do not inherently enhance the emotional resonance of the message. Similarly, using technical jargon can be effective for conveying specific information to informed audiences, but it can also alienate listeners who may not understand that terminology, thus reducing emotional engagement.