Which command-line interface (CLI) query would retrieve the last three Splunk events?

The command that retrieves the last three Splunk events is based on the correct use of the Splunk Search Processing Language (SPL). The command syntax involves the use of "head" which is specifically designed to return a specified number of leading results from a search. By using head 3, the command effectively limits the output to the first three events returned by the query.

In contrast, the use of "last" is not aligned with the common SPL commands for retrieving a set number of results, as it does not serve that specific purpose in the same way "head" does. Additionally, the last option does not utilize a valid command syntax recognizable by Splunk for retrieving results. Thus, the correct command leverages the appropriate SPL function to accomplish the task of fetching the last three events effectively.