Which option allows records to be edited directly when they display as a list?

The choice that allows records to be edited directly while they are displayed in a list view is enabling inline editing. When inline editing is enabled in NetSuite, users can click directly into a field of a record listed in a grid format and make changes right there without needing to navigate to the record's full form. This feature significantly enhances user efficiency by allowing for quick updates and modifications.

Inline editing provides a user-friendly experience as users can see multiple records simultaneously and make changes without interruption. This is particularly useful when dealing with large datasets where having to open each record individually would be time-consuming and cumbersome.

Other options, such as enabling system notes or optimistic locking, relate to tracking changes and preventing conflicting updates but do not facilitate the direct editing of records in list view. Allowing child record editing pertains to editing related records rather than directly modifying records displayed in a list. Therefore, the ability to edit records directly in such a manner is specifically facilitated by enabling inline editing.