what resistance tactic was used in the senate to oppose the civil rights act of 1964?\na a 75-day…

what resistance tactic was used in the senate to oppose the civil rights act of 1964?\na a 75-day filibuster\nb a 2-day sit-in\nc a 50-page bill against the act
Answer
Brief Explanations:
Southern Democratic senators used a lengthy filibuster, a tactic of extended speech to delay or block a vote, to oppose the Civil Rights Act of 1964. This filibuster lasted 75 days, the longest in Senate history at that time, before being overcome by a cloture vote. Sit-ins were a form of grassroots protest by activists, not a Senate tactic, and a 50-page opposing bill was not the key resistance method used here.
Answer:
A. a 75-day filibuster