Recoverability evaluation refers to the evaluation of the ability of the current state of the event to return to a basic normal state after the occurrence of the emergency and before the end of emergency management, and the evaluation of the time and resources required to complete the recovery. According to the above definition, which of the following is recoverability evaluations? ['Estimated H1N1 influenza vaccine development time.', 'After the earthquake, the Ministry of Civil Affairs distributed relief materials to the disaster-stricken areas.', 'The superior instructed to resolve the problem of passengers stranded in the car due to heavy snow closure within 48 hours.', 'After a major traffic accident, the traffic management department estimates the casualties caused by the traffic accident.']