Which statement is supported by evidence from numerous studies of the bystander effect

A)  It is a widespread phenomenon. 
B)  It occurs only in urban impoverished areas. 
C)  It is limited to contrived laboratory situations. 
D)  There is truth to the old saying that "there is safety in numbers."

Bystander Effect

The phenomenon where individuals are less likely to offer help to a victim when other people are present.

Urban Impoverished Areas

Regions within cities characterized by below-average income, inadequate living standards, and higher rates of poverty.

Laboratory Situations

Controlled environments where experimental research is carried out.