The correct answer is C. Distributable streaming. This is because the eval command is a type of command that
can run on the indexers before the results are sent to the search head. This reduces the amount of data that
needs to be transferred and improves the search performance. Distributable streaming commands can operate
on each event or result individually, without depending on other events or results.You can learn more about
the types of commands and how they affect search performance from the Splunk documentation1.