Christian hasn't been on an airplane or traveled anywhere by plan since 1995. When he begins planning a trip that will require him to fly from where he lives in Arizona to Louisiana, he learns that a valid ID will no longer suffice to get him on the plane. What documentation will Christian need to get on the plane now?
a. a notarized letter from his lawyer and the hospital where he was born
b. his original birth certificate and two letters of reference
c. a passport, passport card, or enhanced ID
d. a visa or a passport with multiple stamps