I believe the answer is A.
Answer:
An instance of deception, trickery or deceit
Explanation:
Fraud is an instance of deception, trickery or deceit. It is an intentional act of cheating others, for unethical & unjustified gain to self (at the cost of harm to others).
A copy meant to look like the original (for wrong purposes) is counterfeit. Sham or poseur who makes false identity & or expertise claims.
Eg : Many people are harmed in fraudulent financial activities.
I believe it is true.
The definition of theme, “the subject of a talk, a piece of writing, a person's thoughts, or an exhibition; a topic.”