Final answer:
The utilitarian approach to moral development focuses on actions that benefit oneself without harming others and evaluates moral righteousness by outcomes or consequences, aimed at producing the greatest good for the greatest number.
Step-by-step explanation:
The approach to moral development that consists of identifying different ways one can behave in situations that will benefit oneself without harming others is the utilitarian approach. This is a type of consequentialism introduced by Jeremy Bentham and developed by John Stuart Mill. The utilitarian perspective evaluates the moral righteousness of an action by its outcome or consequences, particularly in terms of the greatest good or happiness it can produce for the greatest number. It differs fundamentally from deontological approaches, which focus on duties and rules, and from virtue ethics, which prioritize character and the development of moral traits. Hence, the correct answer is d. utilitarian.