Aspeaker can invoke concepts or ideas that the audience is already familiar with by including in a speech

Common Themes

Explanation:

Common themes is the name of the term described in this question because using common themes or including them on the speaker's speech could make the audience relate on the topic and become intrigued or interested. With this method, not only will the speaker give out his information but he or she could capture the attention of the audience.

that they just take and use up resources all the time

explanation :

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