Respuesta :
Answer:
C. varying the volume of his voice.
Explanation:
This will allow the reader to express different emotions in different situations
Carlos should engage his audience by varying the volume of his voice
What is speech presentation?
Speech presentation is how oral words containing vital information are delivered to the audience in a way they will understand and appreciate it.
The four most common delivery styles of public speech delivery are speaking from memory, speaking from a manuscript, and extemporaneous speaking and so on.
Therefore, Carlos should engage his audience by varying the volume of his voice because this will allow his audience to experience different emotions.
Learn more about speech delivery from the link below.
https://brainly.com/question/6534812