“ball goes in (thwack) to mitt,/ and goes out (thwack) back to mitt.” this is an example of which sound device?

This is an example of Onomatopoeia

Explanation:

Onomatopoeia es the process in which the word and the pronunciation of it, phonetically imitates the sound of what it describes. Thwack is a short and loud sound of something hitting a surface, then this word imitates the sound of the action it is describing when it refers to the sound of the ball hitting the mitt back and forth.

well stockyards mean a large yard containing pens and sheds, typically adjacent to a slaughterhouse, in which livestock is kept and sorted. and i'm assuming that by party you   mean a large group of people which does make sense because chicago is a very crowded place much like new york. stockyards tend to take up a lot of room due to needing the area for pens to keep animals in and the fact that stockyards are usually right by slaughterhouse where they process and distribute the product. so its much like a zoo but with some dead animal products close by.