On more controversial issues, a vote is required

On more controversial issues, a "roll call" vote is required .

Roll Call Vote is one among the few different ways of casting a ballot that exist in the U.S. parliament. In roll call vote, the vote of every part is recorded. In this arrangement of casting a ballot, Senators vote as their names are called by the clerk. Each House Member has a casting a ballot card. They need to embed the cards at casting a ballot stations and a running tally of votes is shown. The account of every part's vote is typically done electronically. The names of those voting in favor of and against a movement will be recorded.

answer is b.shrapnel

because the early people found out about it.