An active source is an active transformation the Integration Service uses to generate rows.Which of the following active transformation,the Integration Service does not uses as active source?

Active transformations in Informatica change the number of rows passing through them. Filter is a passive transformation (it filters rows but doesn't change the row count mechanism through generation), while Aggregator, Rank, and Sorter are active transformations that can be used as active sources. The Integration Service does not use Filter as an active source because it's passive.