Which word in the sentence, if any, should be followed by a colon?

they tried to get tickets to the sold-out show at the box office, ticket outlets, and even the chamber of commerce.

a.
there is no error in colon usage.

b.
tickets

c.
show

d.
to

The correct answer is A. There is no error in colon usage. Colon is used when enumerating a list of items which also requires eliminating the verb, like the example below. 

WITH COLON: Sky and Saab like to buy the following for their science project: a piece of plywood, electric wires, and a bulb.

WITHOUT COLON: The materials Sky and Saab like to buy for their science project are a piece of plywood, electric wires, and a bulb.