Which scenario best illustrates 'reckless driving'?

The scenario that best illustrates 'reckless driving' is one where a driver consistently changes lanes without signaling. Reckless driving is generally characterized by behavior that shows a willful disregard for the safety of others on the road. By frequently altering lanes without using turn signals, a driver not only puts themselves at risk but also endangers other motorists who may not anticipate these sudden lane changes. This behavior can lead to accidents or near misses, showcasing a blatant lack of consideration for road safety and the rules governing proper vehicle operation.

On the other hand, the other scenarios provided do not exhibit reckless behavior. Driving cautiously in poor weather exemplifies responsible driving; adhering to traffic signals indicates compliance with the law; and driving under the speed limit during rush hour, while it might seem unusual, actually reflects a safe driving practice in potentially congested conditions. Each of these behaviors suggests a conscientious approach to driving, contrasting sharply with the potential hazards posed by the reckless lane changing described in the correct scenario.