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 evidence presents a factual statement about the laws in another state, highlighting a precedent that could support the argument. It provides a broader context and demonstrates that there is a legal framework in place for younger drivers, which could be persuasive in advocating for similar changes.