Which file system allows for recovery of data from unclean shutdowns in macOS?

The file system that allows for recovery of data from unclean shutdowns in macOS is HFS+. This is due to its journaling feature, which logs changes made to files before they are actually written to the disk. In the event of a power failure or sudden shutdown, HFS+ can use the journal to restore the file system to a consistent state, minimizing the risk of data loss and corruption. This capability is crucial for maintaining the integrity of data, especially in scenarios where unexpected interruptions occur.

Other file systems like ext3, FAT32, and NTFS each have their own characteristics and may include some recovery options, but HFS+ is specifically designed with macOS in mind, incorporating features that align with how macOS operates and addresses unclean shutdown scenarios. Hence, HFS+ stands out as the most suitable option for data recovery in this context.