Which SAS format displays a SAS date as 25JUN2019?

Option B is correct. The DATE9. format in SAS displays dates in the ddMMMyyyy format, which corresponds to the example given (25JUN2019). This format writes dates with a two-digit day, a three-character month abbreviation, and a four-digit year. The other options do not match the correct format:

A is incorrect because ddMMMyy9. format would display a two-digit year.

C is incorrect because there is no such format as Ddmmmyyyy9. in standard SAS formats.

D is incorrect because Dmy9. does not correspond to the required format.

References:

SAS 9.4 documentation on date and time formats.