The correct code snippet uses the 'intck' function to calculate the difference between two dates in days. Option 'C' correctly uses the 'day' interval and the function to get the current date. Other options use incorrect intervals or functions, leading to incorrect results.

The correct answer is option C. The 'SORT BY Quantity DESCENDING' statement within the 'PROC PRINT step orders the output in descending order of 'Quantity' before the report is printed. Options A and E do not specify any sorting order Option B and D use the 'ORDERDESC' statement, which is not the correct syntax for sorting within 'PROC PRINT. You need to use the 'SORT BY statement for sorting the data.

The 'AGE_GROUP' variable is assigned a value based on the first IF condition that evaluates to TRUE, and only that condition- If none are TRUE, it remains unassigned. B) is correct. The data step reads records from the input dataset (in this case, WORKOLD_DATA), then applies the logic within the code to assign values. This happens during execution, not compilation. C) is correct. The order of the IF conditions matters, as the first one to be evaluated to TRUE will determine the assigned value. If the conditions were reversed, a person aged 25 would be assigned 'Child', not 'Young Adult'. D) is incorrect. The SAS DATA step will not generate a warning for missing conditions. It will simply proceed with assigning the 'AGE GROUP' variable based on the existing logic. E) is incorrect. If none of the IF conditions are TRUE, the 'AGE GROUP' variable will remain unassigned. There is no default value set up for the 'AGE GROUP' variable. If this is not desired behaviour for your data set, the code should be amended to provide a value.

The correct code snippet is option A Here's why: 1. ' 'Department and Salary Conditions: '' Option A correctly uses 'and' to combine the department condition with the salary condition within each 'if statement This ensures that the salary adjustment is applied only when both conditions are met. 2. ''ELSE Statement'' The 'else statement at the end of the code handles the case where neither the management nor sales condition is true, ensuring that the salary remains unchanged for these employees. Options B, C, and D use 'do' blocks unnecessarily The code would be less efficient and potentially more complex with the unnecessary 'do' blocks. Option E is missing the 'else' statement, meaning that salaries for employees outside the specific conditions would not be adjusted. Remember to include the 'else' to ensure that salaries are updated for all employees.

The correct answer is option C. The NULL= option within the PROC EXPORT statement allows you to specify a value to replace missing values during the export process. Options A, B, D, and E are not valid options for handling missing values within the PROC EXPORT statement.