Final answer:
The available Apex test levels in Salesforce are: Unit Test, System Test, Integration Test, and User Acceptance Test
Step-by-step explanation:
The available Apex test levels in Salesforce are:
- Unit Test: This test is used to verify the functionality of a specific piece of code in isolation. It focuses on testing individual methods or classes.
- System Test: This test verifies the behavior of the entire system by testing the integration of multiple components.
- Integration Test: This test focuses on testing how different parts of the system work together to ensure that they integrate properly.
- User Acceptance Test: This test is performed by end users to determine if the system meets their requirements and is ready for deployment.