Concept:The Parliament is the supreme legislative authority in India, empowered to make laws for the entire nation.Explanation:The Parliament consists of the Lok Sabha and Rajya Sabha.All bills must be passed by both houses and receive the President’s assent to become law.No other body – not the Prime Minister, President, or Judiciary – has the power to enact laws.Thus, Parliament is the highest law-making body in India.Answer:A. Parliament