The correct answer is the concept of <em>''verbal strategy''</em>.
Explanation:
<em>Verbal strategy</em> is the name given, in the communication field, to the term that refers to the <em>ability to produce an undestandable speech</em> directed to a group with members of differents occupations, cultures, etc. The principle focus on using verbal strategies is that <em>it could improve your verbal communication skills and efectiveness</em> when informing an idea to a group. In addition, it may also help the speaker to achieve the goal of accurately relaying a message by using different types of strategies when speaking.