Sarah, an experienced project manager, took over a troubled project that had serious performance and morale issues. She called the team together and stressed that all team members should keep each other informed, demonstrate that they value each other's input, share feelings, and respect confidentiality. With these new group norms Sarah was establishing $\_\_\_\_\_\_\_\_$ between team members.

a$.$ Team charter

b$.$ Open and transparent communications

c$.$ Legitimate communications

d$.$ Referent communications