Answer: option d is correct
Explanation:
It improves quality and efficiency of computer systems. They can have part to whole relations, extrapolations, or predictions.
Answer:
Laser printer
Explanation:
This is a guess based on experience, but laser printers have rollers, drums, and other various parts that need periodic replacement.
See page 87 of https://www.laserpros.com/img/manuals/hp-manuals/hp-lj-4100-manual.pdf for an example.
The answer to your question is a shot
Well think of it like this lets say this wasn't and security system and it was a video game console and remote.
Now the console or keypad or the main components the power on or shut off the devices and the remote or sensors are the secondary parts but they are needed to help the console or keypad figure out what they are doing.
