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A custom picklist field, Food _Preference_ c, exists on a custom object. The picklist contains the following options: 'Vegan', 'Kosher', 'No Preference'. The developer must ensure a value is populated every time a record is created or updated. What is the optimal way to ensure a value is selected every time a record is saved?
Correct Answer: C
To ensure that the Food_Preference__c picklist field has a value every time a record is created or updated, marking the field as Required on the field definition is the optimal solution. Option C: Mark the field as Required on the field definition Universal Enforcement: Setting the field as required at the field level ensures that it must have a value regardless of how the record is created or updated (UI, API, data import). Data Integrity: Prevents records from being saved without a value in the picklist field, maintaining data consistency. No Additional Code: Achieves the requirement declaratively without the need for Apex code. Reference: Making a Custom Field Required Why Other Options are Less Optimal or Incorrect: Option A: Mark the field as Required on the object's page layout UI Only: This setting only enforces the requirement when users interact with the record via the specific page layout. Not Universal: Does not prevent records from being saved without a value through the API, data import, or other page layouts. Option B: Set "Use the first value in the list as the default value" to True Default Value: Automatically populates the field on new records but does not prevent users from clearing the value. No Enforcement on Updates: Does not enforce a value on record updates if the field is cleared. Option D: Write an Apex trigger to ensure a value is selected Unnecessary Complexity: Writing code for a requirement that can be met declaratively adds unnecessary complexity. Maintenance Overhead: Triggers require testing and ongoing maintenance. Best Practices: Prefer declarative solutions over programmatic ones when possible. Conclusion: Marking the Food_Preference__c field as Required on the field definition ensures that a value is always selected when a record is saved, across all contexts. It is the most efficient and maintainable solution.