The facilitator for the Scrum development process during a sprint whose primary job is to take actions to remove or reduce any obstacles, barriers, or constraints that are impeding progress of the development team toward accomplishing their work tasks and that may negatively impact the successful production and demonstration of a deliverable working product increment by the end of the sprint time is thea$)$ Scrum master.b$)$ project manager.c$)$ product owner.d$)$ sprint timer.