The correct option is A Parliamentary accountability of executive
A parliamentary government is a system of politics where government is drawn from Parliament and is accountable to Parliament thus executive branch derives its democratic legitimacy from the legislature (parliament) and is also held accountable to that legislature. This accountability is enshrined in Principle of collective responsibility. The collective responsibility is related to the fact that, if a vote of no confidence is passed in parliament, the government is responsible collectively, and thus the entire government resigns. The consequence will be that a new government will be formed, or parliament will dissolve and a general election will be called