Rhyme and rhythm are two techniques that are being used. (Edit) also repetition.
How do you ask questions and add a picture?
This is an argument, because Obama is striving to prove that America needs a new strategy for energy. In this argument he uses logos when he gives the audience specific statistics to support his point. He also uses pathos when he appeals to the emotions of the audience, the emotion of hope for a brighter and cleaner future.
To understand is to perceive the intended meaning of ( words, a language or speaker).
The answer is C) Skin is to body wash.
Hope this helps :)