Read the description of Ren and eacute Descartes below. Which step of the scientific method does the description most closely match?

René Descartes is known for his emphasis on skepticism and methodical doubt as a means of attaining certainty. This approach aligns closely with the "hypothesis formulation" step of the scientific method, where one develops a question or a proposition based on observations and seeks to test it through reasoning and experimentation. Descartes’ famous assertion, "I think, therefore I am," illustrates his foundational approach to inquiry by questioning assumptions and seeking undeniable truths.