Which would be considered the most expensive?*5 pointsA SD cardB Hard diskC Floppy diskD Flash memory

The cost of these storage devices can vary greatly depending on their capacity, brand, and other factors. However, generally speaking:

A. SD card - These are typically not very expensive. A 32GB SD card, for example, might cost around $10-$20.

B. Hard disk - These can be more expensive, especially if they have a large capacity. A 1TB hard disk, for example, might cost around $40-$60.

C. Floppy disk - These are very outdated and not commonly used anymore, but they were very cheap even when they were popular.

D. Flash memory - This is a broad category that includes things like USB flash drives and SSDs. The cost can vary greatly, but high-capacity SSDs are generally quite expensive. A 1TB SSD, for example, might cost $100-$200.

So, in general, a hard disk or flash memory device like an SSD would likely be the most expensive, with the exact answer depending on the specific type and capacity of the device.