The correct answer is C. The Rules Committee decides whether the debate can take place.
The House of Representatives is part of the of the federal government's legislative branch and shares equal responsibility for lawmaking with the U.S. Senate (the other part of the legislative branch), and each state is guaranteed at least one member of the House of Representatives.
When a bill is introduced in the House (A bill can only be introduced by a member of the House called a sponsor) it is sent to a committee, the committee votes on whether it should be scheduled or not and if they vote in favor the Rules Committee will study the bill carefully, and make a recommendation.
The Rules Committee determines which bills advance to the floor calendar for consideration by the full Senate and is in charge of deciding the rules of the debate (conditions and amount of time allocated for general debate) and whether the debate can take place or not.