The answer is boom that’s it.
The theme of "The Black Ball" that depends on having a Modernist narrator is that it is not good to be behind the black ball (eight ball) in pool, and in life, African Americans needed to play a game like pool, just to stay out of trouble. The ball is white represents who had a nice life and had the power because whites had all the power, yet with the changing times, the ball’s color might change too, just like the discrimination because Caucasians and African Americans.
Since an antonym is an opposite, like a synonym is a similar word, the opposite of aggressive would be meek.
If you can't find all the needed elements for an MLA citation of an Internet source you can A. Omit a citation for the source.
