Which statement best paraphrases the controlling idea in this introduction paragraph?

On average, 28 percent of passengers on an elementary school bus are in kindergarten or first grade. Most bus drivers allow these
students to sit anywhere they like, but I think this makes no sense. These kids are so little that it's hard for drivers to see them in the back of the bus. Plus, they should be sitting with kids their own age and not older students. In my opinion, kindergarten and first-grade students should all be required to sit near the front of the bus.

A. School bus passengers should be more considerate of younger kids by helping them get on and off with their backpacks.

B. When kindergarten and first- grade students ride the school bus, they should sit with their siblings.

C. School bus drivers should require the youngest passengers to sit at the front of the bus.

D. School bus drivers have a hard time saying small children who sit near the back of the bus.