You can use the (Unique) constraint to compare one column against another column. Hope I got it right.
Answer:
My family, friends and my well-being
Explanation:
Hello there,
<span>What is one of the best ways speakers can make their speeches more memorable?
Your correct answer would be D.) </span><span> "appeal to emotions by varying the tone and pitch of their voices"
When you change the pitch and tone of your voice,(make sure your not sounding like a robot),as you do this, there mind's start to be more focused on your speech. When you use body movement's also.So by using emotion's and by controlling your pitch and tone, this can help the audience to remember your speech.
Hope this helps.
~Jurgen</span>