Which of the following factors can lead to traffic fatalities?

Driving while intoxicated is a significant factor that can lead to traffic fatalities because it severely impairs a driver's ability to operate a vehicle safely. Intoxication affects cognitive functions, reflexes, and motor skills, making it difficult for a driver to react appropriately to unexpected situations on the road. This can result in poor judgment, increased reaction times, and a higher likelihood of engaging in reckless driving behaviors, all of which contribute to the risk of accidents.

In comparison, driving with the windows down, while it may be distracting to some drivers, does not inherently cause traffic fatalities. Driving at night poses challenges like reduced visibility but can be navigated safely with caution and appropriate driving practices. Using cruise control, while potentially risky in certain conditions, does not directly lead to accidents in the same way intoxication does. Thus, the impaired condition brought on by alcohol consumption creates a much greater risk of fatal outcomes in traffic situations.