Final answer:
A breakpoint put on a click activity causes the workflow to pause in debug mode, allowing developers to inspect the program state and troubleshoot issues.
Step-by-step explanation:
When you put a breakpoint on a click activity within a workflow and start that workflow in debug mode, the execution will pause right before the specified activity is performed. Debug mode is typically used by developers to test and troubleshoot their code by allowing them to step through the execution process one line or activity at a time. This helps in identifying any potential issues within the workflow.
You will be able to examine the current state of the program, including variable values, the call stack, and the state of various program threads. This is an invaluable feature for developers when they need to understand the behavior of the code and to ensure that it works as intended.