The parliamentary system of executive vests many powers in the legislature for controlling the executive. Why, do you think, is it so necessary to control the executive?
Any answer supported with argument or explanation would solve the purpose. It is strongly recommended that you prepare the solution on your own. However, one sample solution has been provided for your reference:
It is necessary to control the executive to ensure its accountability to the elected legislature.
The various mechanisms ensure that the executive is answerable and controlled by the people’s representatives so that there is transparency and impartiality.
The control on the executive is must so that it works according to the laws and checks deviation of any kind.
The control of the executive also prevents the domination of personality cult and provides a check to arbitrary functioning and concentration of power into a single source.