his philosopher believed that all change was an illusion:Question 4Answera.Thalesb.Aristotlec.Parmenidesd.Sextus Empiricus

The philosopher who believed that all change was an illusion is c. Parmenides.

Explanation:

Parmenides is known for his argument that change and motion are mere illusions and that reality is unchanging and eternal. He posited that "what is" must simply be, and anything that suggests change contradicts this foundational belief. In contrast, philosophers like Thales and Aristotle had different views about change and the nature of reality, while Sextus Empiricus was associated with skepticism rather than a definitive stance on change. Thus, the correct answer to your question is Parmenides.