Which of the following techniques modifies the schedule based upon resource constraints?

The Critical Chain Method (CCM) is a project scheduling technique that explicitly considers resource availability and constraints when developing and modifying the project schedule. It focuses on identifying the 'critical chain' of tasks and resources, adding buffers to protect against resource-related delays and uncertainties.

The Critical Path Method primarily focuses on activity dependencies and calculating the longest path to determine the shortest project duration, without inherently modifying the schedule based on resource constraints.

The Arrow Diagramming Method is a graphical technique for showing activity sequences and dependencies, not for modifying schedules based on resource constraints.

The Precedence Diagramming Method is a network diagramming technique that shows logical relationships between activities using boxes and arrows, but it does not inherently modify schedules based on resource constraints.