Universal Containers (UC) requested that when a support case is open for more than 7...

To post to Chatter after a time delay (7 days after a Case is opened), a Scheduled Action should be used within a declarative automation tool.

D. Scheduled Process Builder — ✅ Process Builder allows for scheduled actions (e.g., “7 days after CreatedDate”) that can post to Chatter or take other actions.

Incorrect Options:

A. Apex Trigger could work but is not necessary when a declarative tool like Process Builder is sufficient.

B. LWC is a front-end UI framework, not used for backend time-based automation.

C. Scheduled Workflow Rules are legacy and do not support Chatter Post actions natively.

Reference Extracts from Salesforce Help Documentation:

“Scheduled actions in Process Builder can be used to wait for a set time and then perform actions such as posting to Chatter.”Explanation: