What are some common speed limits

It depends on the road, as freeways the average speed limit is 70-80 mph, on highways the average is 60-70 mph. For a normal road that you drive on, like a road to get to a grocery store, average is 30-50. Of course this also depends on where you live.

what are the statements? x

i am pretty sure it is c because when people are closer together, they cannot move as freely. picture being in a mostly full elevator, for instance. the people are right next to you, and you can barely move.