A principal wants to make this year’s Halloween night dance safer because of vandalism and inappropriate behavior in the gym last year. She decides to increase the lighting in the parking lots, ban students from wearing masks over their faces, and increase the number of video cameras near the gym. These ideas are most closely linked to the principle of

a. group polarization.

b. social facilitation.

c. superordinate goals.

d. deindividuation.

e. minority influence.