Answer:
d. A code of ethics states the principles and core values that are essential to a set of people and that govern their behavior.
Explanation:
A code of ethics is the document that includes the values and principles that are important for a company, its employees and any situation that may take place in their environment. It does not include rules or behavior statements, it just give the principles that will lead the decisions and actions that the workers or the company do.
The code of ethics is the document that precede the code of conduct. In the code of conduct you can find the specific rules and procedures that apply to a company, a member or a group.