Which action is considered unsafe while operating a motor vehicle?

Texting while driving is deemed unsafe because it significantly distracts the driver from operating the vehicle, increasing the risk of accidents. This mode of communication requires visual, manual, and cognitive attention, diverting focus away from the road and essential driving tasks. Research has shown that texting while driving is akin to driving under the influence of alcohol in terms of impaired reaction times and increased likelihood of crashes. Other actions, such as turning on the radio, using GPS, or adjusting mirrors, can be potentially distracting but generally involve less cognitive load and can often be performed more safely with appropriate prior planning or adjustments when the vehicle is stationary.