Explanation
To view the history of cases that a specific customer has submitted, the representative should go through the following hierarchy of information: All Accounts > Account Detail > Contact Detail > Case Related List. This is because cases are related to contacts, and contacts are related to accounts. By navigating from the account level to the contact level, the representative can see all the contacts associated with a specific account. Then, by selecting a contact, the representative can see the case related list, which shows all the cases that the contact has submitted or been involved in. This way, the representative can view the history of cases for a specific customer in a logical and efficient manner. References: : UX Designer Certification Prep: Designing with Service Cloud | Trailhead : Service Cloud Basics | Salesforce Help