Which of the following is true of information systems?
a. they are off-the-shelf software without adaptation.
b. they can be adapted to fit business needs.
c. they cannot be purchased as off-the-shelf software.
d. they cannot be tailor made.

B)They can be adapted to fit business needs.

Explanation: Information system is a system that supports the information and communication(ICT).It basically works as the interaction layer between the technology and the users an thus can flexibly work in the business field. It organizes the They are present in the many different structures such as pyramid structured information system, management information system etc.

Therefore the correct option is option(b).

the answer to your question would be something called hertz. the unit of measurement called a hertz, which is one cycle per second, is used to measure clock speed. within one cycle, your computer processes, refreshes, or updates itself to the changes that it is going through. in the case of computer clock speed, one hertz equals one tick per second. the clock speed of computers is usually measured in megahertz (mhz) or gigahertz (ghz)