Respuesta :
The most crucial thing Martin's group can do to improve the effectiveness of their discourse is to "adjust the level of complexity." So, option (c) make their speech effective.
How does level of complexity make the speech effective?
Martin and his team can modify the amount of intricacy, that is the level of complexity, to better reach their audience, as they is addressing the 1st graders.
Audiences can have a solid notion or knowledge of "what is going on" on stage, but they can also be completely unaware of what is going on.
Check out the link below to learn more about effective speech;
https://brainly.com/question/27737343
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