Answer:
5
Step-by-step explanation:
If there is greater freeway congestion at 11 a.m than at 9am, it means that more people are using the road at 11am compared to 9am. This means that the demand to drive on the freeway at 11 a.m. is greater than the demand to drive on the freeway at 9 a.m.
If more people carpool at 11 a.m. than at 9 a.m, there would be less cars on the road at 11am. this would make the freeway less congested at 11am when compared to 9am