A business user wants a quick way to edit a record ' s status and...

The correct answer is B. Custom action.

The user wants to edit a record’s Status and enter a custom Due Date quickly from the record feed in the Salesforce mobile app. A custom action, specifically an object-specific quick action, can expose selected fields for fast updates on mobile. Salesforce documentation states that object-specific actions let users quickly create or update records in the context of a specific record, and the Salesforce mobile action bar displays actions in mobile places such as feeds and record pages.

Custom button and URL formula field are not the best mobile feed-editing tools. Custom quick access link is not the correct Salesforce feature for this requirement.

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