Concept:Constitutions are drawn from legal, historical, and customary sources, not from political party promises.
Explanation:A country’s constitution is derived from legally recognised sources such as laws, customs, judicial decisions, and historical documents.
Judicial precedents (option A) are judge-made laws that form part of constitutional sources.
Customary sources (option B) include conventions, traditions, and accepted practices of governance.
Statutory sources (option C) are laws enacted by the legislature that contribute to constitutional provisions.
Party manifestoes (option D) are election promises made by political parties.
They carry no legal authority unless they are enacted into law by the legislature.
Therefore, party manifestoes are not a source of a country’s constitution.
Answer:D. party manifestoes