Final answer:
The straw man approach to business ethics that is best summarized by the maxim "When in Rome, do as the Romans" is Ethical Relativism.
Step-by-step explanation:
The straw man approach to business ethics that is best summarized by the maxim "When in Rome, do as the Romans" is the Ethical Relativism perspective. Ethical Relativism argues that each culture has its own ideas about ethics and morality, and the predominant view in a culture is considered correct simply because it is the majority view. This approach suggests that there are no universal moral principles that can override the predominant cultural view. However, it should be noted that Ethical Relativism cannot account for criticisms of the majority's views by minorities, which have often led to moral reforms.