Glynnis Has Been Involved in Her College's Theater Department for Several

Glynnis has been involved in her college's theater department for several years. When she first is provided a script, she practices alone, repeating her lines until they sound and feel realistic to her. She always notices that her performance improves significantly when she participates in dress rehearsals with other actors due to

A) social norms.
B) social roles.
C) deindividuation.
D) social facilitation.