The main advantage of the parliamentary form of government is that –

The parliamentary system is fundamentally characterized by the principle of collective responsibility. According to Article 75(3) of the Constitution of India, the Council of Ministers is collectively responsible to the Lok Sabha (the lower house of the legislature). This ensures that the executive remains accountable to the elected representatives and can only stay in power as long as it enjoys the confidence of the legislature. In contrast, the separation of powers where the executive and legislature work independently (Option A) and the continuity of policy due to a fixed tenure (Option B) are primary features of a Presidential system. Furthermore, in a parliamentary system, the head of government can be replaced through a vote of no confidence or a change in party leadership without necessitating a general election (Option D).