Answer:
b. abolitionist movement
Step-by-step explanation:
All of these individuals are similar in the way that they all supported the abolitionist movement. This was a historic movement that focused on ending the Atlantic Slave Trade and setting all slaves free. Both Frederick Douglass and Harriet Tubman were escaped slaves, while William Lloyd Garrison was a prominent American abolitionist, and all three supported and helped with the abolitionist movement.