Which logging level provides information primarily for debugging purposes?

The logging level that provides information primarily for debugging purposes is DEBUG. This level is specifically designed to offer detailed insights into the application's operation, which can help developers identify issues and understand the flow of the program during development and troubleshooting. When DEBUG logging is enabled, it typically includes granular data about the execution of the code, such as variable values and the state of the application, making it easier to pinpoint the source of any problems.

Other logging levels serve different purposes. For instance, TRACE is even more detailed than DEBUG, aimed at capturing an extensive amount of information that can be overwhelming for routine debugging. INFO is generally used to log informational messages that highlight the progress of an application at a high level but does not provide the technical details necessary for debugging. WARN indicates potential issues that may not stop the program but require attention, focusing less on debugging specifics. Therefore, DEBUG is the most appropriate choice for information targeted at debugging.