The correct option is A. People respond to incentives.
Step-by-step explanation:
Smoking is injurious to health and it causes damage to your body. Smoking may lead to long-term health problems. Even secondhand smoke has adverse effects on people. Secondhand smoke is nothing but the mixture of smoke from the burning end of a cigarette and the smoke breathed out by smokers.
State of Illinois banned smoking inside the restaurant. This attracts the people from nearby state to reach Illinois restaurant, because people don’t like to breathe secondhand smoke while eating. So they decided to travel to restaurants at Illinois.