Recoverability evaluation: It refers to the evaluation of the ability of the current status of the event to return to a basic normal state after 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? ['After the earthquake in a certain place, the Ministry of Civil Affairs issued relief materials to the disaster-stricken area.', 'Ministry of Health estimates time required for H1N1 influenza vaccine development.', 'After a major traffic accident, the traffic management department estimates the traffic jam time caused by the traffic accident.', 'The superior instructed to resolve the traffic problem of passengers stranded at the station due to heavy snow closure within 48 hours.']