The correct option is A Deputy Speaker of the Legislative Assembly of that State
Article 179 of the Constitution states that a member holding office as Speaker or Deputy Speaker of an Assembly:
a. shall vacate his office if he ceases to be a member of the Assembly;
b. may at any time by writing under his hand addressed, if such member is the Speaker, to the Deputy Speaker, and if such member is the Deputy Speaker, to the Speaker, resign his office; and
c. may be removed from his office by a resolution of the Assembly passed by a majority of all the then members of the Assembly.