Answer :
The tone of voice should change when you want to emphasize a point, as shown in the last answer option.
Why change the tone of voice?
- To get the listener's attention.
- To promote greater importance to the point highlighted in the report.
Maintaining an appropriate tone of voice shows mastery of the speech and control of the subject, which increases the reliability of the audience. However, the tone of voice must change at points that will be emphasized to get the listener's attention.
Learn more about oral reports at the link:
https://brainly.com/question/27326303
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