Which ethical concept is based on the idea that no absolute natural laws must be adhered to?

The correct choice is based on the idea that ethical decisions should depend on the context of a situation rather than being dictated by strict, universal laws or moral principles. Situation ethics emphasizes the importance of taking into account the specifics of a scenario and the consequences of actions to determine the most ethical course of action. This approach allows for flexibility and adaptation in moral reasoning, acknowledging that different situations may call for different responses.

For example, in a situation where a strict adherence to a rule (such as lying is always wrong) may lead to harm or injustice, situation ethics would advocate for evaluating the context and the potential outcomes to arrive at a more compassionate or beneficial decision. This perspective often aligns with a more humanistic view of ethics that prioritizes love and care over rigid rule-following.

In contrast, other ethical concepts like credibility-centered ethics focus on maintaining an ethical reputation and trustworthiness, ends and means concerns the relationship between the outcomes and the methods used to achieve them, and social utility emphasizes the greatest good for the greatest number. None of these frameworks inherently reject absolute laws in the same way that situation ethics does, which is why the latter is the most fitting answer in this case.