Final answer:
Frederick Douglass established the abolitionist newspaper called 'The North Star' while in New York, playing a significant role in the fight against slavery.
Step-by-step explanation:
Frederick Douglass, having escaped from slavery and becoming a prominent abolitionist, took on many roles in his continued fight to end the oppressive institution. While he was in New York, specifically in Rochester, he established a newspaper called The North Star. The correct answer is: B) Established a newspaper called "The North Star". This publication was a cornerstone of the abolitionist movement, through which Douglass worked tirelessly to highlight the evils of slavery and promote the rights of African Americans.