In contrast to tape drives, which require sequential access, hard drives, flash memory storage, and optical discs use access to locate a file immediately.

In contrast to tape drives, which require sequential access, hard drives, flash memory storage, and optical discs use direct access to locate a file immediately.

Explanation:

Sequential access storage devices are the ones in which data is placed and accessed in sequence. Magnetic Tapes and Optical storage are the examples of sequential files. They are used because of their high density at low cost and non-volatility.Direct access storage devices are those secondary devices that has unique and discrete addresses and locations for each record. Each record can be accessed randomly. Hard drives and flash memory are the examples for direct access storage devices. They are much efficient that sequential access storage devices.

i hope it will help you!

B, it is easy to scan for key information. there are times when a lot of information is included in a business letter. the block letter format you find key bits of information quickly, without having to read through the whole paper.