Answer:
b) Reliability.
Explanation:
When the program gives correct output and fulfills the customer's requirements it is said to be reliable and said to be achieving reliability.
Correctness is when the program only provides correct solution.
Efficiency is when the program does the work in less time.
Usability means that the program is usable or not.
Answer:
Malware is the shortened form of malicious software. Malware is an umbrella term used to refer to a variety of forms of hostile or intrusive software including Ransom wares, Computer Viruses, Worms, Trojan Horses, Spyware, Adware, Scareware etc.
Answer: CPUs
Hope it helps :) and let me know if you want me to elaborate.