I would help but i do not know this answer.
The oncee-ler is the narrator and a character in The Lorax. He was a greedy industrialist who cut down all of the trees to make a peculiar garment known as a thneed..
What you need here is something that can be in plural, so any uncountable nouns, such as traffic and information (options a and c respectively) are not possible. this leaves us with option b) as the correct option!