Which of these, aside from routinely servicing your vehicle, can help conserve Virginia's natural resources?

Using cruise control when driving on the highway is an effective way to conserve Virginia's natural resources primarily because it helps maintain a steady speed. When a vehicle operates at a consistent speed, it generally consumes fuel more efficiently than when speeding up and slowing down frequently, which can lead to increased fuel consumption and higher emissions.

Cruise control helps reduce the frequency of acceleration and deceleration, thereby optimizing fuel efficiency. This efficiency not only helps drivers save money at the gas pump but also lessens the overall environmental impact associated with fuel burning, contributing to the conservation of natural resources. Moreover, the reduced wear on the vehicle's engine and brakes can lead to longer maintenance intervals and lower resource consumption for repairs and replacements.

In contrast, the other options do not provide similar benefits regarding resource conservation; for example, power steering and backup cameras focus on driving convenience rather than efficiency. Sharp braking increases fuel consumption and wear on the vehicle, which can lead to a greater environmental footprint.