Createsols Inc. is a content writing company. During a project debriefing session, representatives from different departments of the company were arguing relentlessly over who was to be blamed for the project's failure. Amy, a representative from the finance department, requested everyone to stop pointing fingers at each other and to calm down. In this scenario, Amy was most likely playing the role of a $\_\_\_\_\_$ in the meeting.

a$.$ socializer

b$.$ harmonizer

c$.$ dominator

d$.$ facilitator