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Which capability does the Force.com IDE provide?

  1. Roll back deployments.

  2. Run Apex tests.

  3. Download debug logs.

  4. Edit metadata components.

The correct answer is: Run Apex tests.

The capability of running Apex tests through the Force.com IDE is significant for developers working with Salesforce. This feature allows developers to execute unit tests for their Apex classes and triggers directly within the IDE interface, providing immediate feedback on the functionality and correctness of their code. Running Apex tests is essential for ensuring that the code behaves as expected and meets the necessary requirements before deployment. It aids in verifying that new changes do not introduce errors into existing functionality, aligning well with best practices in software development such as continuous integration and testing. Moreover, the Force.com IDE integrates smoothly with the Salesforce environment, allowing developers to manage their test execution results alongside their development work, which contributes to a more streamlined workflow. This capability helps in identifying failures and understanding issues in a more efficient manner. Other capabilities, while relevant to the development process, do not align with the specific functionality provided by the Force.com IDE in the same direct way as running Apex tests does. For instance, rolling back deployments and downloading debug logs are typically handled through other tools or interfaces within Salesforce, while editing metadata components involves utilizing features that are just part of code management rather than a focus of the IDE's testing capabilities.