Final answer:
Jo Ann Gibson Robinson led the Women's Political Caucus in the organization of the Montgomery bus boycott, working with E.D. Nixon and Martin Luther King Jr. to mobilize the African American community against racial segregation on buses for 381 days.
Step-by-step explanation:
The president of the Women's Political Caucus who led the organization of the Montgomery bus boycott was Jo Ann Gibson Robinson. She, along with E.D. Nixon, president of the local NAACP, and a young minister named Martin Luther King Jr., played a pivotal role in the planning and implementation of the boycott.
The Women's Political Council demonstrated remarkable organization, using news spread by newspaper notices and word of mouth, to rally congregations to the cause.
This collective action laid the groundwork for the bus boycott in response to Rosa Parks' arrest for refusing to surrender her bus seat to a white passenger. Starting December 5, 1955, African American residents of Montgomery started boycotting the buses, a protest that lasted 381 days until segregation on the city buses was ended.