Bystander Effect Is the Tendency for an Individual Who Observes

Bystander effect is the tendency for an individual who observes an emergency to:

A) help less when other people are present than when the observer is alone.
B) help more when other people are present than when the observer is alone.
C) empathize more when other people are present than when the observer is alone.
D) fear being a victim less when other people are present than when the observer is alone.