Final answer:
The correct command to add location information to events in data analytics platforms is "Lookup". It is used to enrich event data with additional details by referencing an external lookup table containing the desired information.
Step-by-step explanation:
The command used to look up and add location information to events is C) "Lookup". This command is typically used in the context of log management and data analytics platforms, such as Splunk. The lookup command enriches your event data by adding field values from an external source. For instance, if you have IP addresses in your event data and you want to add geographic information such as country or city names, you would use a lookup table that maps IP addresses to this location information.