What btool flag returns the exact .conf file and location used for the configuration?

The correct choice is the flag that provides detailed information about the configuration files that Splunk uses. Using the --debug flag allows administrators to see the exact configuration settings being applied, including where the configuration files are located and their complete content. This level of detail is crucial for troubleshooting and verifying that the right configurations are being applied in Splunk.

The --verbose flag offers additional information about the command being executed but does not focus specifically on configuration file details. The --config flag is designed to specify a certain configuration, but it doesn't provide the comprehensive view of file locations and contents. The --info flag gives general information but again lacks the specific detail about configuration file paths and their contents that is provided by the --debug flag. Thus, for pinpointing exact .conf files and their locations within Splunk's architecture, the --debug option is the most suitable.