In a parliamentary system, the executive branch (council of ministers) derives its legitimacy from the legislature (parliament). The Lok Sabha, the lower house directly elected by the people, holds the power to keep the government in check. If the Lok Sabha loses confidence in the council of ministers, it can lead to the resignation of the government.

According to Article 75(3), The Council of Ministers shall be collectively responsible to the House of the People. Hence, the correct option choice is 'D'.