Final answer:
All of the above constitute distractions while driving: cell phones, radio, and passengers.
Step-by-step explanation:
Of the options provided, all of the above constitute distractions while driving. Distractions while driving can be visual, manual, or cognitive in nature. A cell phone can be a distracting factor as it requires visual attention to read or send messages, manual dexterity to operate, and cognitive focus to carry on a conversation. Similarly, the radio can divert attention from the road as the driver may get engrossed in changing stations or adjusting volume. Additionally, passengers can also be a distraction if they engage the driver in conversation or disrupt their concentration.