Which sentence does not use a colon correctly?

a.
we need the following information: names of the guests, table number, and luncheon choice.

b.
here's what we have to do: fold your clothes, find the suitcases, and pack for the trip.

c.
the art appreciation course explores these artists: claude monet, leonardo da vinci, and vincent van gogh.

d.
these gift bags are for: mrs. hernandez, mr. rollins, and miss crane.

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.