Some influential ethical systems look primarily to consequences as ways to judge what is ethically good or not good. What system of ethical reasoning assumes that the most ethical action does the greatest good for the greatest number of people?

The best answer to the question: What system of ethical reasoning assumes that the most ethical action does the greatest good for the greatest number of people?, would be: Utilitarianism.

Explanation:

Utilitarianism is a form of consequentialism that establishes that the ethical way to act in any given circumstance is to take into account the outcomes and how these will impact the greatest number of people possible in a positive way. Thus, decisions, and their ethics, are based not on individuals, and how these decisions impact them, but how decisions will impact the greater group in positive ways. If an action benefits the great majority, then it is considered ethical and good. Essentially utilitarianism establishes that the most ethical choices will be those that generate the greatest positive impact on the greatest number of people, to the sacrifice of the individual benefit.