When is it permissible to use a handheld device while driving?

Answer: D — Under no circumstances

Using a handheld device while driving is prohibited under all circumstances to ensure the safety of all road users. This rule is in place because operating a handheld device can divert attention from driving, significantly increasing the risk of accidents. The focus needs to remain on the road, so any activity that could distract a driver, like texting or making calls without hands-free equipment, is strictly forbidden. The options that suggest limited circumstances for using a handheld device do not align with safety regulations and are incorrect. It is essential for drivers to understand that regardless of their age or the driving context, such as being stopped at a red light or driving in a parking lot, the priority should always be on maintaining full attention to driving tasks. Thus, the only acceptable answer is that using a handheld device is prohibited under all circumstances.