How is a floppy disk typically used?

A floppy disk is primarily used as a data backup medium. This is because it was designed to store relatively small amounts of data and was widely used in the past for transferring files between computers or for creating backups of important files. Given its limited storage capacity compared to modern data storage solutions, it became common for users to copy key files onto floppy disks for safe keeping.

The other options address uses that may not align with the floppy disk's capabilities or historical context. For example, using a floppy disk as a primary storage device is impractical due to its limited storage capacity, making it insufficient for today's larger data needs. Similarly, a floppy disk does not serve as a cloud storage solution, which operates over the internet and uses remote servers to store data. Lastly, referring to floppy disks as a type of physical memory does not accurately reflect their function; while they are physical media, they do not operate like memory in the sense of temporary data storage during computing processes, such as RAM.