Which method can be used to properly log the status code in a debug message?

The selected method effectively logs the status code in a formatted debug message using a placeholder. This approach utilizes string formatting, where the message string contains a placeholder represented by {0} that will be replaced by the value of http.statusCode. This means when the log is output, it will clearly indicate the status code in the context of the message "hello:" ensuring clarity and conciseness.

Additionally, using a debug level for logging the status code is appropriate here, as it indicates that the message is intended for diagnostic purposes and will be useful for developers without cluttering error logs. The 'profile' logger allows for categorization of logs, which aids in maintaining organized and relevant log outputs.

This choice harmonizes clarity, functionality, and an appropriate logging level, making it an effective option for tracking the status code within the application debugging process.