B. Here is why. First of all rural areas have been declining rapidly for the last couple centuries due to urbanizations which eliminates A and D. Secondly drive-in movies are not popular. Maybe in the 60s and 70s but not now. But maybe its popular in other countries. But that is unlikely. That eliminates C. That leaves B. Growing Car Sales - CHECK Growing Suburbs- Lets think about it. People moving to suburbs also have to commute farther to work making them want a car rather than bike or walk. so -CHECK.