What does the acronym “ETL” stand for in the context of data warehousing?

The correct answer is D. Extract, Transform, Load.

ETL is a three-step process for loading data into a data warehouse. The first step is to extract data from the source systems. The second step is to transform the data into a format that can be loaded into the data warehouse. The third step is to load the data into the data warehouse.

Option A is incorrect because it does not include the step of loading the data into the data warehouse.

Option B is incorrect because it does not include the step of transforming the data.

Option C is incorrect because it does not include the step of extracting the data.