What is a common use of decision tables in test case design?

Decision tables are particularly useful in test case design as they define combinations of necessary input conditions and the expected output for those conditions. This structured method allows testers to capture complex business rules and decision logic in a tabular format, making it easy to see all possible combinations of inputs and the corresponding outcomes.

By using decision tables, testers can ensure comprehensive testing coverage of various input scenarios and how the system is supposed to respond to those inputs. This is crucial in situations where multiple conditions affect the behavior of an application, such as in business rule validation, where different combinations of inputs can lead to different results.

While other options might highlight important testing activities, they do not specifically address the primary function of decision tables. For instance, outlining user acceptance criteria focuses more on defining what the software should achieve from a business perspective rather than detailing input-output relationships. Visualizing test coverage typically relates to ensuring all areas of the application are tested, rather than providing a specific means to document input/output combinations. Documenting test scenarios and results, while essential for tracking test progress, does not delve into the complexities of conditional logic in the same way that decision tables do.