From which of the following sources are constitutional provisions not derived?

Constitutional provisions are the rules, principles, and guidelines contained in a country's constitution that define the structure, powers, and limitations of the government and the rights and duties of its citizens. These provisions are derived from sources such as statutory laws, customary practices, judicial precedents, and constitutional conventions. However, storybook is not a source from which constitutional provisions are derived. Storybooks are fictional works that tell stories for entertainment or educational purposes and have no legal or constitutional significance. Therefore, the correct answer is "Storybook".