Part a: which statement best expresses the central idea of this article? a when a normal commute home is interrupted, it can cause lifelong fear and anxiety for new york city residents. b some people will selflessly take extraordinary action to save people who are in danger because they feel responsible. c after performing a heroic action, rescuers such as capuzzo and lindsey often become arrogant. d new yorkers rarely each other or show concern when tragedy strikes.