Which one of the following is the BEST description of a service request?

According to ITIL, a service request is a user's request for something to be provided, such as information, advice, access to an IT service, or execution of a pre-approved standard change. This definition clearly scopes service requests as routine, low-risk, pre-defined actions that follow a known fulfillment procedure, separating them from incidents and non-standard changes. The inclusion of 'information, advice, or standard change' precisely matches the ITIL glossary definition.

This description is too broad and resembles a general customer demand or business requirement rather than the specific ITIL definition of a service request.

This defines only the submission channel (a self-help web interface), not the nature of a service request itself - service requests can be raised through phone, email, or any other channel.

A low-risk RFC approved by the change manager describes a standard or minor change processed through Change Management, which is a distinct process from Service Request Management.