Which PROC CONTENTS option is used to suppress detailed output listing for each SAS data set in a library?

The option used to suppress detailed output listings for each SAS data set in a library in PROC CONTENTS is NODS. This option effectively allows the user to obtain only the basic information about data sets without displaying the detailed output that usually includes variable attributes and other specifics.

When utilizing PROC CONTENTS, the default behavior is to provide a comprehensive overview of the contents of data sets, which can be excessive if one only needs a summary. By specifying the NODS option, the output is streamlined, making it easier to review the main details without becoming overwhelmed by extensive information.

Other options have specific functions in PROC CONTENTS but do not pertain to suppressing detailed output listings. For example, the ALL option would include all data sets, NODESC might affect descriptive information but not the detailed output itself, and VARNUM would change the order of variable presentation without influencing the overall level of detail displayed. Thus, NODS is the correct choice for achieving the desired result of minimal output during the PROC CONTENTS process.