Which behavior would NOT be considered unethical?

The correct answer is: C. Selling a rundown house and disclosing known defects.

Explanation: This behavior is not considered unethical because it involves transparency and honesty. Sellers are obligated to disclose known defects in a property, which protects the buyer’s right to make an informed decision. In contrast, the other options involve deception or exploitation, which are unethical practices.