Node Diagrams and Dependency Arrows

D.

The activity sequencing technique that uses nodes to symbolize activities and arrows to show how their dependencies are connected is called the Precedence Diagramming Method (PDM).

PDM is a type of network diagramming technique used in project management to visually represent the project schedule. In PDM, activities are represented as nodes or boxes, and the relationships between them are represented by arrows.

There are two types of dependencies in PDM: finish-to-start (FS) and finish-to-finish (FF). A finish-to-start dependency means that an activity cannot start until the previous activity has finished. A finish-to-finish dependency means that an activity cannot finish until the previous activity has finished.

PDM also allows for the representation of lead and lag time, which are the amounts of time that an activity can be moved forward or backward in the schedule without affecting the overall project deadline.

Other activity sequencing techniques used in project management include the Critical Path Method (CPM), which calculates the longest path of dependent activities in a project schedule, the Arrow Diagramming Method (ADM), which is similar to PDM but uses arrows to represent activities and nodes to represent dependencies, and the Critical Chain Method (CCM), which focuses on resource availability and constraints when scheduling project activities.

Therefore, the correct answer to the question is D. Precedence Diagramming Method (PDM).