Answer:
Imitation.
Explanation:
The word "genuine" denotes something that is true, real, authentic. And it's antonym is something that has been replicated, or something fake, made up or an imitation.
Thus, if the underlined word is "counterfeit", then the correct answer will be "imitation". Counterfeit denotes something that has been re-produced, re-made so as to gain profit by deceiving, defraud others with it's likeness.
