A country's constitution could be derived from the following sources except?

Analyze the question: We need the one option that is NOT a source of a country's constitution.

Concept: A constitution is the body of fundamental rules by which a country is governed. Its main sources include:

• Judicial precedents: Court decisions that interpret the constitution and become part of constitutional law (e.g., landmark Supreme Court rulings).
• Customary sources: Traditions, conventions and practices accepted over time (e.g., the British constitution relies heavily on conventions).
• Statutory sources: Acts of the legislature, decrees, and constitutional enactments (e.g., Acts of Parliament, Orders in Council).
• Other sources include written documents, historical documents, and international treaties or agreements.

Step-by-step solution:

1. Judicial precedents (A): These are a recognized source, so A is not the answer.
2. Customary sources (B): Conventions and customs are a recognized source, so B is not the answer.
3. Statutory sources (C): Laws made by the legislature are a recognized source, so C is not the answer.
4. Party manifestoes (D): A manifesto is only a political party's promise or plan of action during elections. It has no legal force and is not a formal source of a constitution. It may influence government policy, but it does not form part of the constitution.

Answer: D. party manifestoes.

Exam tip: In "except" questions, first remove the options you know are valid sources. Remember: constitutions come from law, custom, and court decisions. A manifesto is a political promise, not law.