Answer :
It should be C because you would need an annual visit with the vendor to get rid of the needless junk or unwanted viruses.
Answer:
C. She should sign an annual maintenance contract (AMC) with her vendor.
Explanation:
Option a is not a very great suggestion. The power supply of her house might fluctuate and even be suddenly interrupted. This might have an adverse effect on certain components of the computer such as the hard disk especially in the case of sudden shutdown of the system. It would be better if she was told to get an Uninterrupted Power Supply (UPS).
Option b is also not a very good one. I mean, what is the essence of having a computer when I'll have to minimize its use. Computers are designed to be used all day long. It is meant to be used anytime it is needed.
Option d is, as a matter of fact, a very bad suggestion. Allowing the components to get overheated will definitely cause hardware failures. It could damage the motherboard of the system.
The best option is that of c. Signing an annual maintenance contract(AMC) with her service provider (vendor in this case) will not only ensure the avoidance of hardware failures but also;
1. help her save money
2. make her have experts, that will handle her system, at her disposal
3. allow her access support in the case of emergencies.
Hope this helps!