The correct answer to this open question is the following.
Although there are no options attached we can say the following.
The way Jackie Robinson supports his argument that African Americans can no longer wait for the hearts of men to change in order to receive their civil rights by writing a serious letter to the President of the United States. Jackie's Robinson desire was that the US President committed to supporting black people's civil rights through his words as well as his actions.
Jackie Robinson was an excellent African American baseball player. He was the first black player to play in Major League baseball when the President of the Brooklyn Dodgers signed in 1947. The name of the executive was Branch Rickey.
During his career, Robinson committed to supporting the civil rights of the African American people, and he used to write letters to the US President.