Which of the following schedule network analysis techniques is applied when a critical path method calculation has been completed and resources availability is critical?

Resource leveling is a schedule optimization technique applied after the initial schedule is created using the critical path method (CPM). Its primary purpose is to resolve resource over-allocations or shortages by adjusting the schedule. When resources are critically constrained, resource leveling will delay activities (even critical ones) until the required resources are available. This process often changes the original critical path and extends the project's overall duration to create a feasible schedule based on resource availability.

1. Project Management Institute. (2017). A Guide to the Project Management Body of Knowledge (PMBOK® Guide) (6th ed.). Section 6.5.2.4, Resource Optimization. "Resource leveling. A resource optimization technique in which adjustments are made to the project schedule to optimize the allocation of resources and which may affect the critical path."

2. Project Management Institute. (2021). A Guide to the Project Management Body of Knowledge (PMBOK® Guide) (7th ed.). Section 4.3, Models. This section lists scheduling models which include the critical path method and resource optimization techniques (leveling and smoothing) as methods used in project management.

3. Vanhoucke, M. (2012). Project Management with Dynamic Scheduling: Baseline Scheduling, Risk Analysis and Project Control. Springer Science & Business Media. Chapter 3, Section 3.1, "The Resource-Constrained Project Scheduling Problem". This academic text discusses how resource leveling is a primary method to address resource constraints after an initial schedule, such as one derived from CPM, is established. (DOI: https://doi.org/10.1007/978-3-642-25175-7)