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Answer: ânothing simpler.â
In this excerpt, the author is clearly trying to persuade the audience. We know this because of his use of the phrase "nothing simpler." By highlighting the simplicity of his argument, he hopes that the audience would be persuaded to see the argument as a simple one as well, and therefore, be convinced of his position.
The phrase that helps the reader conclude that the authorâs purpose is to persuade is ânothing simplerâ
What is a phrase?
A phrase is known to be a composition of words that has two or more linked words that do not make a clause or does not make sense.
Note that the use of the phrase ânothing simplerâ can best  helps the reader to bring to conclusion the authorâs purpose in persuading the reader.
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