Until recently, Celine was a member of the new product development team at her company. She stated that during discussions, team members tended to agree with another without too much discussion. Even certain team members did not object although they had reservations about certain decisions. These team members contended that they would prefer to remain silent rather than disturbing team cohesiveness. What Celine is describing amounts to _____________. a. Group ineffectiveness. b. Groupshift. c. Groupthink. d. Group cohesiveness