Correct Option: A

The Council of Ministers has to resign if a no confidence motion is passed by a majority of members of Lok Sabha. A motion of no confidence is primarily a statement or vote which states that a person in a superior position - be it government, managerial, etc. is no longer deemed fit to hold that position. This may be based on said person falling short in some respect, failing to carry out obligations, or making choices that other members feel are detrimental.