Answer:e. moral principles and values that govern the actions and decisions of an individual or group.
Explanation:
Ethics are those standards that are social acceptable by individual groups which guides their actions sometimes to ensure that those actions that they take are not hurtful or betrayal or damaging to themselves or to their surroundings which include people around them and the environment.
Every individuals have their own principles and values that they live by such as religious principles and values which guides how one interact with others and how they go by making decisions in their lives.
The word or phrase to fill into the gap is the "Ku Klux Klan", an extreme right organization calling for what they would call a "purification" of the US-American society.
