Why is cloture very difficult to achieve? senators are famous for their debating prowess and would not easily give up to cloture. the two-thirds vote of the senate is almost impossible to attain. cloture can only be achieved by a three-fifths vote, and parties don’t usually have that kind of majority.  senators usually wish to continue the discussion, and work hard to prevent members from voting for cloture. the answer is  c.

I believe the answer is: Cloture can only be achieved by a three-fifths vote, and parties don't usually have that kind of majority

Cloture is a motion that can be made by the parliament to bring the debate into an early end. The numbers of Parliament members tend to obtain their seat depending on the support given by the parties. Since in united states, the votes is split almost 50:50, it is almost impossible to achieve 3/5 votes.

do your own work

you really need to do your own work and stop cheating