Answer: Only CSV that have file names that beginning with "tripdata_2020".

## Explanation The query uses the `OPENROWSET` function with the `BULK` parameter specifying the path pattern `'https://datalakeaccount.dfs.core.windows.net/container/path/busfares.csv'`. This pattern indicates that the query will read from a single CSV file named `busfares.csv` located at the exact path `/container/path/` in the Azure Data Lake Storage Gen2 account. ### Analysis of Options: - **Option A: Only CSV files in the tripdata_2020 subfolder** - Incorrect. The query path does not reference any `tripdata_2020` subfolder; it directly targets `busfares.csv`. - **Option B: All files that have file names beginning with "tripdata_2020"** - Incorrect. The query specifies `busfares.csv`, not files starting with `tripdata_2020`. - **Option C: All CSV files that have file names containing "tripdata_2020"** - Incorrect. The query targets `busfares.csv`, which does not contain `tripdata_2020` in its name. - **Option D: Only CSV that have file names beginning with "tripdata_2020"** - Incorrect. The query targets `busfares.csv`, not files beginning with `tripdata_2020`. ### Correct Interpretation: The query results include **only the data from the single CSV file named `busfares.csv`** at the specified path. The `OPENROWSET` function with a direct file path (without wildcards) reads exactly one file. The `FORMAT = 'CSV'` and `HEADER_ROW = TRUE` parameters ensure the CSV is parsed correctly with the first row as headers. **Note:** The provided question text and code snippet do not align with the choices listed (which reference `tripdata_2020`). Based on the actual query shown, none of the options A-D are correct as they all incorrectly reference `tripdata_2020` instead of `busfares.csv`. However, since the community discussion and answer key indicate D as correct, there may be a discrepancy in the question presentation. For the given query, the results include only the `busfares.csv` file data.

Author: LeetQuiz Editorial Team