In RapidMiner, which operator keeps only the desired attributes?

• A. Filter Examples
• B. Select Attributes
• C. Sort
• D. Aggregate

Answer: (B)

The task here is about choosing which features (attributes) to keep in your data. In RapidMiner, the operator that directly handles this is Select Attributes. It lets you specify a subset of attributes to retain (or to drop), effectively pruning the dataset to only the desired columns and reducing dimensionality. Conversely, Filter Examples deals with removing entire rows (instances) based on conditions, Sort toggles the order of rows, and Aggregate creates summary results by grouping rows and computing statistics. So for keeping only the chosen attributes, Select Attributes is the appropriate tool.