Which of the following is a common distraction while driving?

Common distractions while driving can significantly impair a driver's ability to focus on the road and respond to their surroundings. In this case, the correct answer highlights that cellphones, eating, and adjusting the radio are all activities that can divert attention away from driving.

Using a cellphone, whether for texting, calling, or using apps, is particularly notorious as it can take both hands off the wheel and cause the driver to take their eyes off the road. Eating can involve multiple tasks such as unwrapping food and managing utensils or drinks, further dividing attention. Adjusting the radio, while a minor action, can also lead to visual and manual distractions that disrupt the driver's focus.

In contrast, keeping both hands on the steering wheel, listening to the radio, and using seat belts all contribute positively to safe driving practices. Properly using seat belts is essential for safety but does not constitute a distraction. Listening to the radio can be a way to stay engaged while driving, provided it doesn’t distract the driver excessively. The key element here is that the correct answer identifies activities that actively divert attention from driving, which is crucial for roadway safety.