The sound power the person generated is
.
<h3>Area of the sound wave</h3>
The area of the sound wave is calculated as follows;

<h3>Power generated</h3>
The sound power the person generated is calculated as follows;

Learn more about intensity of sound here: brainly.com/question/4431819
Answer:
c. selenium
Explanation:
sulfur and selenium are in the same group