A project manager is developing a network diagram to understand the flow of a project. Which of the following processes is the project manager performing?

Defining activities involves decomposing work packages into individual schedule activities; it produces an activity list, not a network diagram.

Estimating activity resources determines what types and quantities of resources are needed for each activity, not the order or flow of activities.

Developing a schedule uses sequencing and resource estimates together to produce the final schedule model; it is a later process that builds upon sequencing.

Sequencing activities produces the project network diagram by identifying predecessor and successor relationships between activities. The network diagram is the primary output of this process and shows the flow and order in which work must be performed, which is exactly what the project manager is creating.