To answer this question, you need to understand the different options available with the PROC FORMAT statement in SAS.
Option A) FMTSEARCH - This option is incorrect because it is used to specify one or more format catalogs to search for formats. It is not used to document the formats in a particular format catalog.
Option B) FMTERR - This option is incorrect because it is used to specify whether error messages are generated when a format is not found or when a format is found but it cannot be applied.
Option C) CATALOG - This option is incorrect because it is used to specify the name of the format catalog to create or modify, but it is not used to document the formats in a particular format catalog.
Option D) FMTLIB - This option is correct because it is used with PROC FORMAT to document the formats in a particular format catalog. It specifies the name of the format catalog to be documented.
The correct answer is D) FMTLIB. This option is correct because it is used to document the formats in a particular format catalog.