The most proactive and effective response is to leverage virtual teams. PMI recognizes virtual and distributed teams as standard practice in today's environment, especially when in-person meetings aren't possible. Tools for collaboration, file sharing, and real-time communication can ensure productivity and engagement across diverse geographic locations. According to the PMBOK Guide - Seventh Edition and Agile Practice Guide, leveraging technology to support remote collaboration is part of tailoring project environments. Option A focuses on risk tracking rather than an immediate solution. Option C is drastic and costly. Option D unnecessarily delays deliverables instead of adapting. References: PMBOK Guide - Seventh Edition, Team Performance and Tailoring Domains Agile Practice Guide, Chapter 4 - Working with Distributed Teams ##############################################