* TheTest menu in the Developer Consoleallows the developer to run specific or all test classes, ensuring that the trigger works correctly without affecting production data. Test methods in Salesforce run in an isolated environment and do not modify the actual data.
Why not other options?
* A: Deploying code does not confirm that the trigger works correctly.
* B: Creating a new Contact directly modifies production data, which is not recommended.
* D: Executing a DML statement in Execute Anonymous directly affects production data and is not a safe testing method.
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Testing Apex Triggers