As Stalder (2008) Points Out, One Reason Why an Individual

As Stalder (2008) points out, one reason why an individual in need may still be more likely to receive help from a large group of witnesses than from a lone witness is that

A) the odds of any one witness avoiding the obstacles to helping behavior are increased in a larger group.
B) reciprocity norms are not as strong in large groups.
C) egoistic concerns trump empathic concern in large groups.
D) All of these