The correct answer is D. The eyes. Muslim scientists made major advances in the field of optics, which greatly contributed to the understanding and treatment of various eye conditions. They developed sophisticated instruments and techniques that improved the diagnosis and treatment of eye diseases. One prominent Muslim scientist in the field of optics was Ibn al-Haytham, also known as Alhazen, who lived during the Islamic Golden Age. He conducted extensive studies on the properties of light and how it interacts with the eyes, which laid the foundation for the modern understanding of optics and visual perception. His work significantly influenced European scientists during the Renaissance, leading to further advancements in the field.
