Final answer:
The file system for optical disk media is ISO 9660, while NTFS is for hard drives, UDF is an updated version for newer optical media, and FAT32 is an older file system for drives with size limitations.
Step-by-step explanation:
The term that describes a file system for optical disk media is b. ISO 9660. This standard file system was designed for CD-ROMs and is recognized by multiple operating systems, making it ideal for data exchange. In contrast, NTFS is typically used by Windows operating systems for hard drives, UDF (Universal Disk Format) is used for newer optical media and is an evolution of the ISO 9660, allowing better handling of newer media technologies, and FAT32 is an older file system used for both internal and external drives but has limitations especially with file and partition sizes.