Final answer:
Suffrage protests were one of the methods women used to encourage the passage of the Nineteenth Amendment.
Step-by-step explanation:
One of the methods women used to encourage the passage of the Nineteenth Amendment was suffrage protests. Suffragists campaigned against members of Congress, picketed the White House, went to jail, and engaged in hunger strikes to raise awareness for their cause. These efforts, widely publicized in the news, eventually paid off with the ratification of the Nineteenth Amendment in 1920.