Final answer:
The concept that ethical behavior is dependent on cultural context is cultural relativism. This theory recognizes that morals vary between cultures without universal moral standards, with cultural relativism supporting this variation in ethical perspectives.
Step-by-step explanation:
The concept that suggests there is no one right way to behave and ethical behavior always depends on the cultural context is d) cultural relativism. Cultural relativism is based on the idea that the values, beliefs, and ethics of a person are strongly influenced by the culture they grow up in. This leads to different societies having different moral frameworks, which means that what is considered ethical in one culture might be viewed as unethical in another.
For instance, practices such as polygamy might be morally acceptable in some cultures but considered unethical in others. Cultural relativism acknowledges these differences and argues against the existence of universal moral standards. Yet, it is also challenged by the existence of certain universal ethical principles that many cultures may recognize, such as the general principle that unjustified killing is wrong.
The theory of Normative Ethical Relativism builds upon this and argues that moral rightness and wrongness of actions vary from society to society, with no absolute moral standards binding on all. However, the theory faces criticism as it struggles to account for moral criticisms or reforms instigated by minority groups within a society, as well as the existence of some universally accepted ethical principles.