Cloud Kicks (CK) needs to capture the tier for each Loyalty_Member__c record.

A standard custom Picklist field is the correct data model because each Loyalty Member must have exactly one value from a controlled set: Standard, Plus, or Elite. Salesforce defines a Picklist as a field that lets users select a single value from a predefined list. The value set can be restricted so users cannot introduce inconsistent values outside the administrator-approved choices. Picklists also work naturally with Salesforce reporting, including filtering and grouping by the selected value. A multi-select picklist would incorrectly allow one member to belong to multiple tiers simultaneously. A free-form Text field would permit spelling and capitalization variations that undermine data consistency and reporting. A formula field derives its value from other data rather than allowing users to select one of the defined tier classifications.

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