A custom picklist field, Food_Preference__c, exist 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 most efficient way to ensure a value is selected every time a record is saved?
- Set "Use the first value in the list as the default value" as True.
- Set a validation rule to enforce a value is selected.
- Mark the field as Required on the field definition.
- Mark the field as Required on the object's page layout.
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