What is a potential effect of not planning routes appropriately?

Not planning routes appropriately can lead to increasing fuel consumption for several reasons. Inefficient routing may involve longer distances, more stops, or the use of more congested roadways where speed is reduced, all of which contribute to higher fuel use.

When the route is not optimized, it can lead to a combination of driving in traffic-heavy areas, avoiding direct routes, or even needing to stop more frequently than necessary. Each of these factors contributes to a vehicle consuming more fuel than if a well-planned, efficient route had been followed. Thus, the correct answer highlights the importance of route planning in managing operational costs effectively, especially in the context of fuel consumption.