Answer:
C: Payola
Explanation:
1. It wouldn't be a conflict of interest because it means having two sides competing against each other and that's not what happens.
2. It wouldn't be a misrepresentation because that's like selling something and knowing there's a problem with it and that's also not what's happening.
3. It wouldn't be biased because that's influencing them into doing something
So the only option left is payola and payola means undercover or indirect payment, which is happening in this question.