The correct answer is option 3: organic materials. Photosynthesis is the process by which green plants convert sunlight, carbon dioxide, and water into glucose (a type of sugar) and oxygen. Glucose is an organic compound, meaning it contains carbon atoms. This glucose can then be used by the plant for energy and growth, or it can be converted into other organic materials such as starch, cellulose, or proteins. These organic materials are essential for the plant`s survival and are also important for other organisms in the ecosystem, as they serve as a source of food and nutrients. Inorganic materials, on the other hand, do not contain carbon and are not produced through photosynthesis.