Which technological advance did john naisbitt credit with revolutionizing telecommunications?
a. cell phones
b. computers
c. satellites
d. lasers

The answer to this question is letter a.) cellphones. John Naisbitt credited cellphones with revolutionizing communications. In his book, 'Global Paradox', he mentioned that cellphones are like an all-in-one device (it can be a computer, television, and a telephone) that is portable and can conveniently send or receive anything and anywhere.

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.