Final answer:
The best advice for cell phone use while driving is to not make or take calls unless the car is parked, as it ensures driver safety and compliance with laws.
Step-by-step explanation:
The best advice for cell phone use, especially when it relates to driving, is D. To not make or take calls if the car is not parked. This ensures driver attention is not divided, which is critical for safe driving. While making calls at a traffic signal can still be distracting due to the necessity of paying attention to the traffic lights and surrounding, in some places it's also illegal to use a phone unless parked.
Using a hands-free device can decrease the potential radiation exposure to your head and keeping the mobile phone away from your body reduces overall direct contact with the device. It is important to note that using a cell phone within a car can be more hazardous without an external antenna because the enclosed space can amplify the phone's radiation.
Regarding mental and physical health, avoiding the use of a cell phone while driving is a paramount safety practice. It helps in preventing potential accidents and reduces the chances of getting traffic violations, contributing to overall well-being. Remember, safety should always be the priority over convenience when it comes to the usage of technology while driving.