Which solution should a consultant recommend?

Enable the knowledge sidebar related list on the case page layout.

Create a visualforce page called knowledge sidebar on the case page layout.

Enable the knowledge sidebar setting in the case support settings.

Implement a salesforce console for service and enable the knowledge sidebar on the case page layout.

Universal containers recently rolled out a lightning knowledge implementation; however, users are finding unreliable and unrelated knowledge articles displayed in the knowledge one widget in the salesforce console.