Final answer:
Terry Cooper's model of ethical decision-making acknowledges that individuals often consider the interests of themselves and others, rather than thinking solely about their own interests. The complexity of moral decision-making highlighted by Sir William David Ross's concept of competing duties further supports this view.
Step-by-step explanation:
Terry Cooper's model of ethical decision-making does not include the option that humans think only about their own interests when making decisions. Instead, ethical decision-making often involves considering the interests of both ourselves and others.
This is exemplified in the statement that individuals often consider the interests of themselves and others when they are making decisions. This perspective aligns with the understanding of morality that individuals may act in a way that approximates rational, economic decision-making by measuring utility and costs at the margin, although they may not strictly adhere to this model in all cases.
Furthermore, the idea of competing duties highlighted by Sir William David Ross speaks to the complexity of ethical decision-making, as we can encounter situations where moral obligations conflict, requiring us to weigh different factors to determine our moral duty.
Considering competing duties involves evaluating and prioritizing different moral rules when making decisions, as certain rules may be more relevant or pressing depending on the situation. This pluralistic approach acknowledges the practical aspects of ethical decision-making, which features important distinctions from the simplified perspectives of classic utilitarianism and deontology