Angela Took Over as Manager of a Group of Warehouse

Angela took over as manager of a group of warehouse order-pickers about a month ago. While the employees' performance is satisfactory, she has noticed that the group seems to squash any new ideas about how they might do their work more effectively. What should Angela do to increase tolerance for deviance?

A) take steps, such as weekly group lunches, to increase the cohesion of the group
B) order the group to accept at least half of the new ideas that are proposed
C) set up an incentive system for employees' suggestions about procedure changes
D) create competition between members of the group