Email 1 (From: Project Manager, To: Team): 'Due to a client request, the deadline for Phase 2 of Project X has been moved up by two weeks. Please adjust your schedules accordingly.' Email 2 (From: Team Member, To: Project Manager): 'Regarding the revised deadline for Project X, I'm concerned about our ability to deliver quality work given the current workload and the need for additional testing steps we hadn't factored into the accelerated timeline.' What is the primary concern raised by the team member in response to the project manager's email?