Which file system was developed by Apple to replace the Macintosh File System?

The file system developed by Apple to replace the Macintosh File System is the Hierarchical File System. This file system was introduced with Mac OS in the late 1980s, allowing for a more structured way of organizing data. The Hierarchical File System introduced important features such as support for larger disks and better organization through a hierarchical directory structure, which made it easier for users and applications to manage files efficiently.

The other options represent different file systems used in various operating systems but are not related to Apple. The Extensible File System, for example, is mainly associated with Linux, while the New Technology File System and Windows File System are linked to Microsoft Windows. Each of these systems has unique characteristics designed to meet the needs of their respective environments, but they do not serve as a successor to the Macintosh File System in Apple's ecosystem.