A,B, and D are all rhetorical purposes in his speech.
The author is saying if everyone has perfect precision and people look at what they world could be everything would look much more beautiful then what it already is
Answer:
B
Explanation:
If he can explain something which is very complex, in simple terms, he would be able to be more clear and concise. I am unsure of the context of what he is writing- but I hope this helps!