The sequence of activity in network diagrams is shown by?a.Arrowsb.Nodesc.Circlesd.squares

Step 1: Identify the Components of Network Diagrams

In network diagrams, the elements represent different aspects of a project or process. The two main components typically found in these diagrams are nodes and arrows.

Step 2: Understand the Role of Arrows

Arrows in a network diagram are used to show the sequence of activities. They indicate the direction of flow from one activity (or node) to another, thus clearly displaying how tasks are interconnected and the order in which they must be completed.

Step 3: Analyze Other Options

• Nodes often represent the activities or events themselves but do not indicate sequence.
• Circles and squares are shapes that might represent various elements in diagrams but are not universally defined as standard representation in this context.

Step 4: Conclusion

Given that arrows clearly depict the sequence of activities in a network diagram, the correct answer is:

Final Answer

a. Arrows