What is required for each class and trigger in the RunSpecifiedTests level?

In the context of the RunSpecifiedTests level, there is a specific requirement for code coverage concerning classes and triggers. For this level, a minimum of 75% code coverage is mandated. This requirement ensures that a significant portion of the code is tested, allowing for the identification of any potential issues or bugs within the logic.

Achieving this level of coverage is crucial as it enhances the reliability of the application and helps maintain the integrity of deployments. It indicates to teams and stakeholders that the code changes have been sufficiently vetted through automated testing, minimizing risks associated with the introduction of new features or modifications.

While options suggesting other percentages, such as 50% or 100%, represent varying standards of coverage, 75% strikes a balance between thorough testing and practical feasibility. A requirement of no coverage would fail to provide any assurance about the quality of the code being deployed. Thus, 75% code coverage is the appropriate standard for the RunSpecifiedTests level in Salesforce development practices.