Ethical questions have no moral answers Evidence that "ethic" based on "metaphysical foundations"

"Is ethic based on metaphysical principles?" Hillary Putnam and Kai Nielsen answer to this question is negative; On the contrary, from the point of view of this article, the answer to this question is positive. Many scholars of Islamic ethic have also given an implicit positive answer to this important question. One of the important evidences that shows that ethic is based on metaphysical principles is the existence of questions in the field of ethic that cannot be directly answered in this field. This article will show before answering these "ethical questions" it is necessary to answer the "prior metaphysical questions" as the source of these questions.
Two important findings of this article: 1. Without answering these prior metaphysical questions, these ethical questions cannot be answered. 2.metaphysical questions receive different and sometimes contradictory answers based on the diversity of their owners' worldviews; As a result, the "answers to ethical questions" and the "ethical theories" that emerge from them will be different and even contradictory.