What is the most powerful weapon that enables the Parliament to ensure executive accountability?

Correct option is B

The correct answer is (b) The no-confidence motion.
 The no-confidence motion is a potent tool in parliamentary systems to hold the executive branch accountable.
 In some countries, it can lead to the dissolution of parliament and early elections if the motion passes.
 It can be moved against the entire council of ministers only.
 For ascertaining the confidence of Lok Sabha in the council of ministers.
 If it is passed in Lok Sabha the Council of Minister must resign from office
 Article 75(3) of the Constitution states that the Council of Ministers shall be collectively responsible to the House of the People (Lok Sabha).
 Article 118 outlines the procedure for the passing of a motion of no-confidence against the Council of Ministers.