Answer:
The president swears to protect and defend the constitution 
Explanation:
"I do solemnly swear (or affirm) that I will support and defend the Constitution of the United States against all enemies, foreign and domestic
 
        
             
        
        
        
I would go with:
A theme is best written as statement because a theme is main thing of a story, the author could also use a statement in a story to make it seem more alive or more real.
I Hope my answer worked for you :)
        
                    
             
        
        
        
Hand Gestures are ESSENTIAL
visual aids are great if possible
short simple sentences so easier for the audience to understand
clear loud voice, make sure you are aware of the intent behind your voice - is it to persuade (loud projecting booming persuasive), create sympathy (quiet, urging) etc etc.