A project manager is performing activity sequencing with the project team. Each activity is written in a box with arrows linking the boxes according to their dependencies. Which of the following tools

The Arrow Diagramming Method (ADM) represents activities as arrows and events as nodes, which contradicts the description of activities being in boxes.

The Precedence Diagramming Method (PDM), also known as Activity-on-Node (AON), represents project activities as nodes (boxes) and their dependencies as arrows, which directly matches the description of the project manager's tool.

The Critical Path Method (CPM) is an algorithm for scheduling project activities to identify the longest sequence and determine minimum project duration, not a diagramming technique itself.

The Critical Chain Method (CCM) is a project management method that focuses on managing buffers to account for resource contention and uncertainty, not a diagramming method for activity sequencing.