Final answer:
An approver may be able to edit a locked record in an approval process if they have 'Modify All' permissions or are an administrator. This depends on the specific workflow system and its settings.
Step-by-step explanation:
Whether an approver can edit a record that is locked by an approval process depends on the specific system and settings in use. Generally, in systems like Salesforce, once a record enters an approval process and is locked, it cannot be edited by users without the appropriate permissions. However, an approver with 'Modify All' permissions, or an administrator, can edit the locked record. In customizable workflow systems, an approval process may include steps that allow certain users to edit a record during the approval, or have settings that permit record editing under specific circumstances.