Final answer:
The Clipboard tool is used to test case behavior by setting property values and to review the current values of case data, providing a real-time status of a running case or application.
Step-by-step explanation:
You use the Clipboard tool to perform various tasks in a software development environment, particularly when working with case management systems or business process management applications. However, focusing on the two tasks mentioned in the options provided, the Clipboard tool is commonly used to:
Test case behavior by setting property values for an open case, which is a technique to understand and check how different values affect the case processing.
Review the current values of case data, enabling developers or users to see the real-time status of properties within a running case or application.
Option a) is related to rule testing which isn't directly a function of the Clipboard tool, whereas option b) pertains to declarative expression calculation which may be corroborated using the Clipboard tool but is not its primary function. The approach of applying new tools to familiar situations (c = 1 and o = 2) can help build competence as per the referenced information.