The correct answer is: C. Artifice : Deceptive
Authenticity is the quality of being genuine or true. Apocryphal is something that is of doubtful authenticity or origin. Artifice is a clever trick or device, especially one used to deceive. Deceptive is tending to mislead or deceive.
In each pair, the first word is the opposite of the second word. Authenticity is the opposite of apocryphal, which means something that is of doubtful authenticity or origin. Artifice is the opposite of deceptive, which means tending to mislead or deceive.
The other options are not correct because they do not have the same relationship as the original pair of words. Integrity is not the opposite of hypocritical, which means pretending to have beliefs or feelings that one does not actually hold. Assertiveness is not the opposite of dogmatic, which means having or showing unshakeable beliefs or principles. Wickedness is not the opposite of nefarious, which means very wicked or evil.