To specify the record format of an output dataset, you would use the RECFM (Record Format) parameter.
Option A) RECORG parameter - The RECORG parameter is used to specify the record organization of a dataset, such as sequential or indexed. It is not used to specify the record format.
Option B) STORCLAS parameter - The STORCLAS parameter is used to specify the storage class for a dataset, which determines its allocation attributes. It is not used to specify the record format.
Option C) RECFM parameter - The RECFM parameter is used to specify the record format of a dataset. It determines how records are structured, such as fixed or variable length, and whether they contain blocked or unblocked data.
Option D) None of the above - This option is incorrect because the correct answer is option C, the RECFM parameter.
Therefore, the correct answer is option C) RECFM parameter.