You have a Power BI semantic model named Model1 that runs in Import storage mode. You need to reduce the size of Model1. The solution must NOT increase report query response times. What should you do?

In Import storage mode, all data is loaded into Power BI's in-memory engine, so removing unnecessary columns directly reduces the amount of data stored and thus the model size. This action does not negatively affect query response times, as less data needs to be processed.

Unpivoting columns reshapes data but typically increases the number of rows, potentially increasing model size and complexity, not reducing it.

Renaming columns only changes metadata and does not affect the actual data stored or the model size.

Changing to DirectQuery storage mode shifts data processing to the source database, which reduces the model size in Power BI but can significantly increase report query response times if the source is slow or queries are complex.