Universal Container wants Opportunities to no longer be editable when itreaches the Closed/Won stage. Which two strategies can a developer use to accomplish this? Choose2 answer

A validation rule can be configured to prevent saving an Opportunity if its StageName is 'Closed/Won' and any field is modified, effectively making the record uneditable.

An Apex trigger (specifically a 'before update' trigger) can inspect changes to the Opportunity when its StageName is 'Closed/Won' and add an error to the record, preventing the update operation.

An after-save flow runs after the record has been saved, so it cannot prevent the initial save operation or roll back changes; thus, it cannot prevent an edit from occurring.

Process Automation settings is a broad term; while some tools within it (like Process Builder or Flow) can trigger logic, they cannot directly prevent a record save in the same way a validation rule or 'before' trigger can.