For a flight to be executed, what must a valid form of identification be?

For a flight to be executed, the requirement for a valid form of identification is a valid government-issued photo ID. This requirement is crucial because such identification provides verification of identity through an official source, which is essential for security protocols in aviation. A government-issued photo ID, such as a passport or driver's license, not only confirms the individual's identity but also ensures that the document is current and recognized by authorities, contributing to the overall safety and security of air travel.

In contrast, options such as an expired driver's license, a birth certificate, or a Social Security card do not meet the standard for valid identification at airports. An expired driver’s license lacks current validity, while a birth certificate does not include a photo and is not an accepted form of identification for air travel. Similarly, a Social Security card also does not serve as an identification document with a photo and does not provide the security features needed to verify one’s identity in the context of airport security.