Which of the following tasks does the BADI implementing class perform?

A BADI (Business Add-In) implementing class primarily performs filtering tasks by allowing developers to enhance or modify the standard behavior of SAP applications without changing the original code. Specifically, filtering in this context means that the BADI can be used to manage the visibility or selection of data according to specific criteria set by the business requirement.

When a BADI is implemented, it can include methods that define how data should be filtered before it is processed further in the application logic. This is crucial for ensuring that the correct subset of data is acted upon based on specific conditions, which helps in tailoring the application behavior to meet unique business needs.

While tasks like sequencing, inserting, and deleting can be functionalities of broader application logic, they are not specific to the role of a BADI. Instead, the BADI serves as a point to apply additional logic, primarily focusing on filtering data rather than performing alterations such as insertion or deletion directly associated with the records themselves.