When parking on hills, which of the following is correct?

When parking on hills, it's essential to take several precautions to ensure your vehicle does not roll away. The correct answer highlights that all provided options reflect appropriate safety practices for parking on inclines.

Turning the wheels to the right when parking uphill without a curb is critical because it ensures that if the vehicle rolls, it will roll off the road and not into oncoming traffic. Similarly, when parking uphill with a curb, turning the wheels away from the curb is essential because if the vehicle were to roll, the tires would hit the curb and prevent it from rolling into the street.

Additionally, placing an automatic gear shift in park is vital because it locks the vehicle in place, preventing it from moving. For manual transmissions, shifting to reverse when parked facing downhill or to first gear when facing uphill is an effective measure to further secure the vehicle against rolling.

Thus, every point listed contributes to safe parking practices on hills, indicating that all options are correct.