The condition that often develops in large groups when tasks are neglected, because it is impossible for any one person to receive credit (or blame), is called

The choices can be found elsewhere and as follows:

a. regression toward the mean
b. groupthink
c. group polarization
d. social loafing
e. rationalization

I believe the correct answer is option D. The condition that often develops in large groups when tasks are neglected, because it is impossible for any one person to receive credit (or blame), is called social loafing.