the main way to end a filibuster is by
a. a two thirds vote of the senate
b. invoking the cloture rule
c. convening a conference committee
d. voting the filibuster out of office
d.
Nope. Check this site.
http://uspolitics.about.com/od/usgovernment/a/filibuster.htm
Actually, the correct answer to the question is b. invoking the cloture rule. Invoking the cloture rule is the main way to end a filibuster in the Senate. A filibuster is a tactic used by members of the Senate to prevent a vote on a bill or nomination by delivering a long speech or engaging in other obstructive tactics to delay or block the legislative process.
To invoke the cloture rule, a senator must file a motion for cloture, which requires the support of at least three-fifths (or 60 out of 100) senators. Once the motion is filed, a period of debate follows, after which a vote is taken. If the motion to invoke cloture is successful and receives at least 60 votes, the filibuster is effectively ended, and a vote on the bill or nomination can proceed.
It's important to note that a two-thirds vote of the Senate (a. a two-thirds vote of the Senate) is incorrect because it actually refers to the threshold required to override a presidential veto. Convening a conference committee (c. convening a conference committee) is also incorrect as it is a different legislative procedure specifically related to reconciling differences between House and Senate versions of a bill. Finally, voting the filibuster out of office (d. voting the filibuster out of office) is not a valid option since a filibuster is a tactic used by senators, and there is no voting process to remove a senator specifically for engaging in a filibuster.