Based on the trigger and class code, the change that should be made to the test method is option C. This option adds the Test.startTest() and Test.stopTest() methods to the test method, and moves the delete statement and the second query inside the Test.startTest() and Test.stopTest() block. This way, the test method can force the asynchronous @future method to execute and update the Edit__c field before the assertion. Option A would not work, as it does not use the Test.startTest() and Test.stopTest() methods to wait for the @future method to finish. Option B would not work, as it uses the Test.startTest() and Test.stopTest() methods incorrectly, and does not move the delete statement and the second query inside the block. Option D would not work, as it does not use the Test.startTest() and Test.stopTest() methods at all, and also changes the assertion to an incorrect value. Reference: [Testing Asynchronous Apex], [Test Class]