Conclusion: "it is advisable for businesses to implement such variations."
Why? When a large business with multiple, linked computer systems uses identical operating system software on all of its computers in order to standardize throughout the office, this makes them increasingly vulnerable to a computer vandal. If a computer vandal gains access to one computer, they automatically have access to the data on all computers. They can then use a virus to destroy must of the data on all the computers. However, if small variations were introduces into its operating system software, this unauthorized access of all the computers at the same time would virtually be eliminated. And, we are told that this variation can be implemented without any loss of computer compatibility to the business.
We want to choose an answer choice that strengthens our conclusion.
Answer choice (B) does just this. It explains that correcting damage from a resulting invasion by a computer virus program is much more expensive than preventing damage. Therefore, implementing variations into the software, i.e. preventing damage from a virus, is cheaper than correcting damage resulting from an invasion due to increasingly standardized computers. So, we should clearly implements the variations as the stimulus has concluded.
Hope that helps! Please let us know if you have any other questions.
