Which of the following is an effect of using mobile devices while driving?

Answer: B — Reduced attention to the road

Using mobile devices while driving significantly reduces a driver's attention to the road. Engaging with a phone—whether it involves texting, calling, or using applications—diverts cognitive, visual, and manual resources away from the primary task of driving. This divided attention can lead to slower reaction times, an increased likelihood of missing important visual cues, and a higher chance of being involved in a crash. The overwhelming body of research on distracted driving highlights that any form of mobile device usage is detrimental to a driver's ability to perceive their surroundings and respond effectively to changing road conditions. Therefore, the reduction in attention to the road is a major and well-documented effect of mobile device use while driving.