Which statement best describes an effect of the filibuster?
a.)it encourages the house of representatives to pass bills the senate will not consider.
b.)it allows senators to prevent a vote on bills that would otherwise pass.
c.) it prevents the president from vetoing bills the senate strongly supports.
d.)it makes it easier for the senate to pass bills without lengthy debates.

The second alternative is correct (B).

The obstruction is a resource used by parliamentarians in certain occasions to avoid the voting of certain matter while they gain time to try to obtain support to reverse the scoreboard of the voting. That is, it is an attempt to prevent the approval of a virtually approved project.

In general, the mechanisms used are pronouncements, requests for postponement of the discussion and voting, formulation of questions of order, exit from the plenary to avoid quorum or the simple manifestation of obstruction by the leader, which makes the presence of its leaders is no longer counted as a quorum.

However, it can also be termed as technical obstructionism when it uses regimental tools to postpone the voting of a proposition.

i think the answer is b.