Comprehensive and Detailed Explanation: When a team is demotivated, the best approach is participative-engage them directly in finding a solution. Meeting with the team to collaboratively define a feasible plan empowers them, shows respect for their input, and rebuilds motivation. It also helps regain commitment by reinforcing a sense of ownership. * B focuses only on individual motivation but not planning. * C may appear dismissive of the team's emotional state. * D is premature without first involving the team. References: * PMBOK Guide - Seventh Edition, Team Performance and Stakeholder Engagement Domains * Agile Practice Guide, Chapter on Servant Leadership and Team Empowerment ##############################################