Filibuster is procedure in which the government officials agree to have unlimited debate. Only the senates can have a filibuster, the house of representative can't do it. This eliminate option a.
in order to conduct their business, Senate need 51% of members present (the majority). But, the house only require 20% (not a majority). This eliminate option B.
Cloture is a procedure to end every debate with a vote for a certain decision. Only senate has cloture, House of Representative does not have it. This eliminate option D.
