In Splunk Cloud, when there is a need for a change request that might involve modifying settings, upgrading, or other actions requiring Splunk Support, the process typically requires submitting a support case.

D. Any person with the appropriate entitlement: This is the correct answer. Any individual who has the necessary permissions or entitlements within the Splunk environment can submit a support case. This includes administrators or users who have been granted the ability to engage with Splunk Support. The request does not necessarily have to come from a Certified Splunk Cloud Administrator or the infrastructure owner; rather, it can be submitted by anyone with the correct level of access.

Splunk Documentation References:

Submitting a Splunk Support Case

Managing User Roles and Entitlements