The answer would be the last one, leave it as is. B and C change the meaning of the sentence entirely, while A sounds unnatural and is too verbose.
Hope this helps! :)
C. the ability to do something well without wasted time or effort
Orthodox is a greek origin word comes from "orthos" (straight)and "doxa" (opinion)
Naknahatrepid ulrep atik aragen id ajareb isutitsni hakapagnem
False there are many different types of writing even emotional writing