Here's a question and a few possible answers: 

Q: John was living in a big city.  It had many roads and a lot of traffic.  He liked it, but didn't appreciate the smell.  He thought that there was too much what?
Possible A: have experiences, pollution, happiness, garbage, death

Why is "pollution" an answer aligned with human common sense? 


big cities have a lot of people, a lot of roads and a lot of traffic that produce pollution