The most credible and reliable support for the argument in favor of lowering the age to get a driver's license to 14 years of age would be:
A national news broadcast reports that in South Dakota, teenagers as young as 14 years old can receive their restricted driver’s permits.
This piece of evidence is credible because it references a specific policy in another state that allows younger individuals to drive with certain restrictions, providing a real-world example of a similar situation. It can also be used to argue that lowering the age for a driver’s license is already being implemented successfully in some areas.