Which one of these is not a distraction while driving?

Option 4 (checking the left and right side mirrors and the interior rearview mirror) does not affect attention while driving. In fact, it is a safe driving habit. Regularly checking the surrounding traffic helps drivers understand the position of their vehicle, anticipate, and avoid potential hazards. In contrast, other listed behaviors such as eating and drinking, driving while unwell, and using a phone while driving can significantly distract the driver, decrease their response speed to changes in the environment, and increase the likelihood of accidents.