Which two applied steps can you use to prevent new columns from being imported during dataset refreshes?

To prevent new columns from being imported during dataset refreshes, selecting specific columns is essential. When you choose columns in Power BI, you explicitly define the columns you want to include in your dataset. This step restricts any additional columns that may exist in the data source. As a result, during each refresh, only the defined columns are imported, ensuring consistency in the dataset structure.

The reasoning behind the other options is as follows: simply removing columns only deletes the specified ones but does not prevent new ones from being added during future refreshes. Removing other columns acts similarly, as it retains only the columns you wish to keep, yet it does not safeguard against the introduction of new columns in the data source. Transposing is unrelated to controlling column imports; instead, it changes the layout from rows to columns or vice versa, which does not affect the inclusion or exclusion of columns during refreshes.