The correct answer is D) Benjamin "Pap" Singleton encouraged African Americans to move to Kansas for better opportunities.
What motivated the mass migration of many African Americans to Kansas in the 1800s was that Benjamin "Pap" Singleton encouraged African Americans to move to Kansas for better opportunities.
In a time when opportunities for work were limited for African Americans, there was a good leader named Benjamin "Pap" Singleton, who was an activist than inspired many black people to move to Kansas in what is known as the "Great Exodus" of African Americans that were looking for better jobs and living conditions for their families. This "exodus" took place from 1877 to 1879.