The correct answer is A - Coordinate a collaboration session so all the team members are involved in the solution process. Agile encourages cross-functional collaboration and collective problem-solving. When technical uncertainty arises, the best course of action is to leverage the team's combined knowledge through collaboration rather than working in isolation. PMI Agile Practice Guide: "Agile teams rely on collaboration, especially when solving complex problems. A diversity of input and joint ownership leads to better and faster decisions." (PMI Agile Practice Guide, Section 4.2 - Communications and Collaboration) Mike Griffiths notes: "Agile practitioners should encourage collaborative decision-making. Technical decisions made in isolation can result in integration issues and delay. Collaboration unlocks shared ownership." (PMI-ACP Exam Prep, Chapter 4 - Team Performance) Other options: * B shifts focus away from current challenges. * C is long-term and not immediately actionable. * D may help, but it introduces external dependency instead of leveraging team knowledge.