What significant message does the author get from the incident?

A、Itisessentialtopayattentiontotheemergencyproceduresbeforetakeoff.;
B、Anemergencylandingisverymuchlikearoller-coasterride.;
C、Shemusttakeprideinherfellow-passengersfortheirwonderfulperformance.;
D、Whatismostimportantisnottopaybackkindnessbuttopassiton.