Which statement is used to read a CSV file in SAS?

The INFILE statement with the DSD option is the appropriate choice for reading a CSV file in SAS because it allows for the effective handling of delimited data formats, specifically CSV files, which utilize commas as the delimiter. The DSD option is particularly useful as it ensures that consecutive delimiters are treated as missing values and allows for the proper handling of quoted strings, which could contain delimiters within the text. This is essential when reading CSV files, since improper handling of these cases could lead to incorrect data interpretation.

The DATA statement is generally used to create or manipulate datasets within SAS but does not directly facilitate the reading of CSV files on its own. While the IMPORT statement can be employed to read a CSV file as well, it is more often used for general-purpose import tasks and may not offer the same level of detail or customization as utilizing the INFILE statement with options like DSD specifically tailored for CSV formats. The FILENAME statement serves to assign a logical name to a file, but does not read the data directly; instead, it is used primarily in conjunction with other statements to provide a reference to a specific file location.