Answer:
Deontological
Explanation:
Ethical approach to any fact means the ways the fact should be instead of the ways the things are. Understanding ethics and determining ethical approaches are most important to make a sound ethical decisions.
There are basically three approaches to ethics. They are --
The deontological ethics is an approach to adhere to one's own values and principles.
Thus in the context, the narrator always sticks to his or her values of not breaking promises at any situation. Thus this reflects deontological ethical approach.