Who is the Head to Transact the Business of the Lok Sabha
Option 4 is the right answer.
Speaker of Lok Sabha
The Lok Sabha Speaker is the guardian of the rights and privileges of the House, its Committees and members. It depends solely on the Speaker to refer any question of privilege to the Committee of Privileges for examination, investigation and report. It is through her that the decisions of the House are communicated to outside individuals and authorities.
It is the Speaker who decides the form and manner in which the proceedings of the House is published. She also issues warrants to execute the orders of the House, wherever necessary, and delivers reprimands on behalf of the House. The entire Parliamentary Estate is under the authority of the Speaker. When a decision of the House is to be ascertained on a motion made by a member, the question is put by the Speaker before the House to obtain the decision.