<em><u>larynx</u></em> is the organ which produces sound in human body.
<em>hop</em><em>e</em><em> this</em><em> answer</em><em> correct</em><em> </em><em>:</em><em>)</em>
It honestly depends on what you are trying to gain a licence or certificate in.
A. <span>Aerobic activity is the answer </span>
