The behaviour of a pipeline can be illustrated with a --------- diagram.     [ LO33 ] [ L2 ] [UL]*Data flowSpaceSpace - timeNone

In the context of pipelines, the behavior can typically be illustrated with a data flow diagram. This type of diagram visualizes how data moves through the system, showing the inputs and outputs at various stages in the pipeline. It helps in understanding the sequence of operations and the interconnections between different components of a system.

A data flow diagram can enhance comprehension of how data is processed, indicating how input data flows through processes and how outputs are generated. This representation is especially useful in designing and analyzing both software and hardware systems, including pipelines in computer architecture and data processing environments.

Therefore, the correct answer is Data flow.