PMI Exam PgMP Topic 6 Question 43 Discussion

An infrastructure program has 20 projects. The first half of these projects incurred multiple change orders and failed to be completed on time. The program manager meets with the project managers to discuss lessons learned and to understand the challenges. During the meeting, the project managers complain that key risks and a lack of resources resulted in missing deadlines.

What should the program manager do to ensure that the remaining 10 component projects stay on track?