Teaching about two substances, "thinking'and "extended''developed __ Select one answer: Descartes Hegel Leibniz Spinoza

The question is asking about the philosopher who developed the concepts of "thinking" and "extended" substances. These concepts are central to the philosophy of René Descartes. Descartes proposed that there are two kinds of substances: "thinking" substances, which are capable of thought and are typically associated with the mind, and "extended" substances, which have physical presence and are typically associated with the body. This distinction is a part of Descartes' dualism, which is the view that the mind and body are distinct entities that interact with each other. The other philosophers listed as options - Hegel, Leibniz, and Spinoza - had different philosophical views and did not develop the specific concepts of "thinking" and "extended" substances in the same way that Descartes did.