Answer:
Option C, increase
Step-by-step explanation:
Alcohol is a substance that can depress the central nervous system (CNS), meaning it can cause some sedative effects, despite how many may feel in the midst of consuming it. Alcohol can also cause a myriad of symptoms including blurred vision and reduced visual function, decreased inhibitions or poor judgment, aggressive behaviors, delayed reaction timing, inability to maintain focus, and overall an altered state of mind, none of which are ideal situations for sitting behind the wheel of a motor vehicle.
Because of this, one would say alcohol does not increase a driver's ability to assess driving situations, option C. To avoid confusion, this statement can be rephrased as alcohol decreases a driver's ability to assess driving situations.