The correct answer is E. This code snippet uses both CLASS statements to create a multi-level breakdown of the data by Region and Product. The OUTPUT statement creates a new dataset called 'Summary' with the calculated N (count) and MEAN (average sales) for each combination of Region and Product. The code in option D would produce the overall average sales for each product across all regions, but not the average for each region. Option A is incorrect because it does not specify an output dataset. Options B and C would generate a summary by Region or Product only, not both.

The report shown is a cross-tabulation of 'Region' by 'Product'. The FREQ Procedure indicates that PROC FREQ has been used, and the presence of 'Frequency', 'Percent', 'Row Percent', and 'Column Percent' suggests that a cross tabulation (or contingency table) has been requested. The correct code for this output would include the tables statement to specify the two variables ('Region' and 'Product') with an asterisk between them, which indicates a request for a cross-tabulation of these two categorical variables, and the crosslist option to display the table in a cross-tabulated list format. Therefore, option D is the correct answer:
proc freq data=sashelp.shoes;
tables region*product / crosslist;
run;
Options A and C use the order=freq option incorrectly, as this option would order the table by frequency counts rather than providing a cross-tabulation. Option B is missing the crosslist option needed to produce the cross-tabulated format.

Explanation
https://documentation.sas.com/?docsetId=proc&docsetTarget=n12jw1r2n7auqqn1urrh8jwezk00.htm&docsetVer

The correct answer is A This option uses the wildcard character '%' to match any character following 'A' or 'B', correctly capturing product names starting with 'A' or 'B'. Option B uses the wildcard character which matches any string (including an empty string), leading to unintended results. Option C is incorrect because the '-' operator is used for numeric ranges, not string patterns. Option D is incorrect because it only matches the exact values 'A and not any string starting with 'A' or 'B'. Option E is incorrect because it doesn't define a label for other product names. Option A correctly defines the format for the desired labeling.