Final answer:
The bootable solid-state device that can replace traditional storage media like floppies, CDs, and DVDs is the USB Flash Drive.
Step-by-step explanation:
The solid-state device that is bootable and can replace floppies, CDs, and DVDs is the USB Flash Drive. Unlike external hard drives, which work by magnetically encoding information, USB flash drives use flash memory to store data. This allows them to be more compact and portable. USB flash drives, unlike SD Cards, are commonly used to transfer data between computers and have widespread boot support in computer systems, which also differentiates them from Optical Disc Drives that require physical media like CDs or DVDs. Flash drives are recognized for their ease of use, durability, and the ability to retain data without power.