The common refrain of Ecclesiastes is that: "Vanity, vanity. All is vanity!"
This is evident in the book of Ecclesiastes Chapter 1 - 12.
- Also, the preachers of Ecclesiastes including the author of "Ecclesiastes, Theology of" have constantly described in the book, how meaningless the things of the world are.
- In the book, he concluded that to refrain is to see everything as "Meaningless, meaningless! All is meaningless!"
Hence, in this case, the correct answer is option C. "Vanity, vanity. All is vanity!"
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