Final answer:
CB radios are commonly exempt from Distracted Driving Laws during emergencies to allow for vital communications, and potentially when communicating with law enforcement or when the vehicle is stationary.
Step-by-step explanation:
In the context of Distracted Driving Laws, CB radios (Citizens Band radios) are typically exempt in specific situations. One common exemption is during emergencies which would be the equivalent of option b) Only during emergencies. This exemption allows drivers to use CB radios to communicate crucial information swiftly in situations that could threaten the safety of the driver or others. Another possible exemption, though not universally applied, may include when communicating with law enforcement, as in option c). Option d) When the vehicle is stationary is often a general allowance under distracted driving laws, as the key risk - that of being distracted while the vehicle is in motion - is not present.