Microsoft Power BI Data Analyst Practice Question

The relative date slicer and the built-in date hierarchy require the column to be a true date/time value, not plain text. Choosing Date/Time converts each string to a single datetime value that preserves the hour, minute, and second while remaining fully supported in the data model. Selecting Date would strip the time portion, Date/Time/Timezone would be converted to UTC and lose its explicit timezone metadata, and Text would prevent time-based filters or calculations. Therefore, Date/Time is the most appropriate choice.