Final answer:
Under FAR 61.15, the FAA can revoke a pilot's certificate if the pilot has two unrelated motor vehicle actions within 3 years. The correct option is C.
Step-by-step explanation:
Under FAR 61.15, the Federal Aviation Administration (FAA) may revoke a pilot's certificate if the pilot has two unrelated motor vehicle actions within 3 years. These actions can include offenses such as driving under the influence of alcohol or drugs, refusing to undergo a blood alcohol test, or any other actions that result in the cancellation, suspension, or revocation of a driving license.
This regulation emphasizes the importance of maintaining a clean legal record for those holding a pilot's certificate, as non-aviation related legal issues can have severe consequences on an individual's aviation career.
Hence, option C is correct.