The correct answer is option C. The OUT= option specifies the output file name and the KEEP= option selects the desired variables. The DELIMITER=';' statement specifies a semicolon as the delimiter for the exported data. Option A exports the entire dataset. Option B specifies an output file named 'customers-csv' but doesn't set the delimiter. Option D uses a quote character instead of a delimiter. Option E specifies a pipe character as the delimiter, which is not the desired semicolon.

The correct answer is This code snippet correctly uses the 'compress' function with the ' 'b" option to remove both leading and trailing whitespaces. This ensures that addresses are stored without unnecessary whitespace. Option A uses 'trim' to remove only leading and trailing whitespaces, but it does not address other unnecessary whitespace in the address. Option B uses 'compress' without specifying a character, which can remove any non-alphanumeric character, leading to undesirable results. Option C uses 'compress' with a space character but does not remove leading or trailing whitespaces. Option E uses 'trim' which only removes leading and trailing whitespaces. It does not address the removal of unnecessary whitespace within the address itself.

Option B is the correct code snippet. It uses the SUBSTR function to extract the first 3 characters of the 'City' variable and compare them to 'New'. This correctly identifies cities starting with 'New'. Options A and C use incorrect syntax for comparing the string. They use I," which is not a valid wildcard character in this context. Options D and E dont consider cities starting with 'New'. Only option B accurately implements the logic based on the given rules.

The 'where' statement is used to filter the data before the frequency analysis. It specifies a condition (sales > 10000) to include only those observations that meet the specified criteria. Option B uses 'if statement which is not valid in PROC FREQ. Option C is incorrect as the WHERE statement is not used correctly and would not filter the data. Option D uses the 'select if statement which is not valid in PROC FREQ. Option E is incorrect as it uses the 'gt- operator which is not valid in this context.

The correct syntax for creating an Excel workbook using the ODS (Output Delivery System) Excel destination with a specific style is provided by option D. The syntax is as follows: ods excel file='c:\report.xlsx' style=analysis;This statement instructs SAS to output the results of subsequent procedures to an Excel workbook located at c:\report.xlsx, applying the ANALYSIS style to the output. The file= option specifies the path and name of the Excel file to be created or overwritten, and the style= option indicates the style template to be used for the output. The ANALYSIS style is one of the predefined styles that can be applied to the output to control the appearance of tables and graphs. Other options like A) and B) are incorrect due to syntax errors and misplacement of keywords. Option C) has a typo in the file path and incorrect syntax usage.References:
SAS 9.4 Output Delivery System: User's Guide.