Which driving skills are negatively affected by marijuana use?

Marijuana use can impair several critical driving skills, making it a significant factor in road safety. Reaction time is one of the most crucial elements of safe driving, as it affects how quickly a driver can respond to sudden changes in traffic conditions, obstacles, or unexpected situations on the road. When under the influence of marijuana, a driver's reaction time can slow, leading to an increased likelihood of accidents.

Decision-making skills are equally impacted by marijuana use. Safe driving often requires quick and sound judgments based on the surrounding environment—whether to yield, accelerate, or change lanes. Impairment in decision-making capabilities can lead to poor choices that compromise safety for the driver and others on the road.

Physical coordination also suffers when someone is affected by marijuana. Good coordination is necessary for control of the vehicle, including steering, braking, and maintaining lane discipline. Impairments in coordination can lead to difficulties in executing these essential driving tasks effectively.

By recognizing that marijuana affects all of these areas—reaction time, decision-making skills, and physical coordination—it becomes clear why the choice stating 'all of the above' is the best answer. This comprehensive understanding underscores the importance of remaining sober while driving to ensure safety for oneself and others on the road.