They asked about the bike, and i told them it was mine.
which pronoun did the writer use to show possession?
they
i
it
mine

Pronouns refer to the words which replace the noun and eliminated the repetition of words.

Possessive pronouns refer to the pronouns which highlight ownership or possession in a sentence.

A pronoun used by the writer to show possession is 'mine.'

'Mine' as possession pronoun show belonging of the object 'bike' to the subject.

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.