The correct option is A It does not adjust easily according to the changed circumstances
Parliamentary democracy refers to a system of government where the executive and legislature are interconnected and the former is held accountable to the legislature. This form of government is flexible. It is highly adaptive in nature to the changing situations. For example, it is the benefit of the flexible system that in case of grave situations the leadership can be changed without harassment and objections. This enables the government to tackle the situation efficiently.