Phoebe Saw the Passenger in the Seat Across the Aisle

Multiple Choice

Phoebe saw the passenger in the seat across the aisle suddenly slump forward in her seat. While the other passengers looked around for a flight attendant, Phoebe immediately started to administer CPR. In this case, Phoebe's actions are the opposite of what would be expected based on ​

A) the actor-observer effect.
B) social loafing.
C) group polarization.
D) the bystander effect.