Which of the following activity sequencing techniques uses nodes to symbolize activities and arrows to show how their dependencies are connected?

Critical Path Method (CPM) is an algorithm to calculate the longest path of planned activities, but it often uses PDM as its underlying diagramming technique, it's not the diagramming technique itself.

Arrow Diagramming Method (ADM), also known as Activity-on-Arrow (AOA), uses arrows to represent activities and nodes to represent the start and end of activities (events), which is the opposite of the description.

Critical Chain Method (CCM) is a scheduling method that considers resource limitations and adds buffers, but it does not describe a specific diagramming technique for activity sequencing.

The Precedence Diagramming Method (PDM), also known as Activity-on-Node (AON), represents activities as nodes (boxes) and uses arrows to illustrate the dependencies and logical relationships between these activities. This method allows for four types of dependencies: finish-to-start, start-to-start, finish-to-finish, and start-to-finish.