Explanation:

To create a calculation item that changes the context from the selected date to month-to-date (MTD), the appropriate DAX expression involves using the CALCULATE function to alter the filter context and the DATESMTD function to specify the month-to-date context.
The correct completion for the DAX expression would be:
In the first dropdown, select CALCULATE .
In the second dropdown, select SELECTEDMEASURE .
This would create a DAX expression in the form:
CALCULATE(
SELECTEDMEASURE(),
DATESMTD( ' Date ' [DateColumn])
)

Microsoft Power BI Desktop (A) and Tabular Editor (B) are the tools you can use to prevent report creators from using implicit measures. In Power BI Desktop, you can define explicit measures which can be used in visuals. Tabular Editor allows for advanced model editing, where you can enforce the use of explicit measures. References = Guidance on using explicit measures and preven ting implicit measures in reports can be found in the Power BI and Tabular Editor official documentation.

Explanation:

The statement uses SUM(CASE WHEN RefundStatus = ' Refunded ' THEN SalesAmount ELSE 0 END) AS TotalRevenue, which calculates TotalRevenue by summing SalesAmount only when RefundStatus is ' Refunded ' , and 0 otherwise. This means Region values are returned regardless of RefundStatus, but the TotalRevenue reflects refunded items.
The WHERE (TransactionDate) - YEAR(GETDATE()) condition is incomplete and lacks proper comparison (e.g., no equality or range check), so it does not filter for the current year.
The TotalRevenue calculation does not aggregate all SalesAmount values with RefundStatus of ' Refunded ' ; it sums SalesAmount only for refunded items within the grouped data, with 0 for non-refunded items.

Explanation:

Comprehensive Detailed Explan ation
From the case study:
Research division data for Productline2 is currently in CSV format in storage2.
Requirement: "All the Research division data in the lakehouses must be presented as managed tables in Lakehouse explorer." In Fabric lakehouses, managed tables are stored in Delta format inside the Tables folder.
Step 1: Reading the source
df = spark.read. format ( " csv " ) \
options(header= " true " , inferSchema= " true " ) \
load( " abfss://storage1.dfs.core.windows.net/files/productline2 " )
This correctly ingests the CSV source from ADLS Gen2.
Step 2: Writing to Lakehouse as a managed table
You must write the data in Delta format to ensure it is queryable and managed within the lakehouse.
The correct path is under Tables/ , because this is where Fabric automatically manages Lakehouse managed tables .
The target table should be named productline2 , so the correct path is:
df.write.mode( " overwrite " ). format ( " delta " ).save( " Tables/productline2 " ) Why not other options?
CSV or Parquet formats would not create a managed Lakehouse table; they would just create files.
Writing to productline2 directly (without Tables/ ) would store unmanaged files in the Lakehouse Files area, not managed tables.
Writing to Tables/research/productline2 adds an unnecessary subdirectory and is not the standard structure for managed tables.
Correct Final Code
df.write.mode( " overwrite " ). format ( " delta " ).save( " Tables/productline2 " ) References Managed tables in Microsoft Fabric Lakehouse Delta Lake support in Fabric Spark write to Lakehouse

To view column information like the one shown in the exhibit in Power Query, you need to select the options that enable profiling and display quality and distribution details. These are: A. Enable column profile - This option turns on pro filing for each column, showing statistics such as distinct and unique values. B. Show column quality details - It displays the column quality bar on top of each column showing the percentage of valid, error, and empty values. E. Show column value distribu tion - It enables the histogram display of value distribution for each column, which visualizes how often each value occurs.
References: These features and their descriptions are typically found in the Power Query documentation, under the section for data profiling and quality features.