Final answer:
The statement is false; varying the pitch and speed of your voice can make a presentation more dynamic and engaging, as it helps to emphasize points and maintain the audience's interest.
Step-by-step explanation:
The statement that varying pitch and speed of your voice makes a presentation less effective is false.
Varying the rate of speech and volume can be powerful tools when giving a presentation. Speaking too fast or too slow can detract from the effectiveness of the delivery, making it difficult for the audience to follow along or causing them to lose interest. Varying your speaking rate strategically can add emphasis, tension, or drama to your message.
Volume also plays a critical role. Being either too loud or too soft can be distracting or make it difficult to hear, but using volume changes can help to convey emotions or highlight important points. Moreover, varying the pitch of your voice, although more limited physically, can communicate enthusiasm, signal a question, or indicate transitions in your speech.
To improve clarity and engagement during a presentation, it is also essential to focus on articulation. Clear and distinct speech ensures that the audience understands the content, which is essential for an effective presentation.