Final answer:
Each activity in a network diagram is represented by a box in the activity node, and the description of the activity is written within the box. Network diagrams in project management depict the sequence of project tasks and their relationships.
Step-by-step explanation:
Each activity in a network diagram is represented by a box in the activity node, and the description of the activity is written within the box. In the context of project management, a network diagram is a tool that depicts the sequence of activities in a project and the relationships between them. An activity node, also known as an event node, is a visual representation of the actual work that needs to be done within the project. This diagram is crucial for planning and tracking the progress of activities.
It's important to note that while a Venn diagram is helpful for visualizing events in probability and set theory, especially for showing the OR and AND events, a network diagram serves a different purpose in project management. A network diagram in project management is specifically designed to illustrate the tasks of a project and the sequence in which they must be completed.