What is the purpose of the OUT= option in PROC SORT?

The OUT= option in PROC SORT is specifically used to name the output dataset that is created as a result of the sorting process. When you use PROC SORT, it organizes the data based on specified variables, and using the OUT= option allows you to designate a new dataset that will store this sorted data. This is particularly useful for preserving the original dataset while creating a new one that contains the sorted results, which can then be used for further analysis or reporting. The ability to name this output dataset provides flexibility in managing the sorted data and helps maintain clarity in your data workflow.

The other options address different functionalities not associated with the OUT= option. For instance, specifying the variables to be sorted relates to the BY statement, determining the order pertains to options that define sorting conditions, and filtering data before sorting involves using procedures such as WHERE statements, all of which differ from the primary function of naming the output dataset.