"focused on helping poor African American workers" describes the Urban League.
Answer: Option A
Explanation:
The National Urban League which is officially called as “National League on Urban Conditions Among Negroes” which was established to resolve problems of poor and needy African-Americans workers regarding economical, political, social justice issues and racial discrimination in the U.S.
Therefore, it is historic civil rights organization based in the City of New York. On 29th September 1910, the initiative was took up by R.S Baldwin and Dr. G.E Haynes. While this League did not resulted from any race riot although 1908 Springfield race riot was responsible for foundation of NAACP (National Association for the Advancement of Colored People).