The correct answer is: B. parabolic
A parabolic camber is the best suited for cement concrete pavements because it provides a smooth and even surface for vehicles to travel on. It also helps to reduce the amount of water that collects on the pavement, which can cause hydroplaning.
A straight line camber is not as effective as a parabolic camber because it does not provide as much support for the weight of
the vehicles. This can cause the pavement to crack and deteriorate over time.An elliptical camber is a combination of a straight line and a parabolic camber. It is not as effective as a parabolic camber because it does not provide as much support for the weight of the vehicles. However, it is more effective than a straight line camber.
In conclusion, the best shape of camber for cement concrete pavements is a parabolic camber. It provides a smooth and even surface for vehicles to travel on, and it helps to reduce the amount of water that collects on the pavement.