The critical chain method is similar to the critical path method, but it considers the availability of project resources. The critical path method assumes that the project resources are available for the identified project work in the sequence of the work as defined in the project network diagram. The Critical Chain method is a project management technique in which schedule network analysis is used for the purpose of modifying and determining a set of project schedules to account for more inadequate than estimated project financial resources. This method tends to keep the resources levelly loaded, but requires the resources to be flexible in their start times and to quickly switch between tasks and task chains to keep the whole project on schedule. In the Critical Chain method, projects are completed more rapidly and with better scheduling consistency.

Answer options B, A, and D are incorrect. These are not valid definitions for the critical chain method.