Based on my personal experience in the workforce, all of the above would be the correct answer. That's based off my experience though. Owners would regularly come in and talk to our managers and employees to make sure everything was kept in order and in compliance. The only other answer I could see fit would be supervisors. Hope I was able to help :)
Answer:
For listening sake
To listen to information from the computer
They receive audio input from the computer's sound card and produce audio output in the form of sound waves.
The answer is true.
Let's say we are calculating the volume of a grain silo where the the width is a constant, but the height can be changed.
In our code we would calculate the volume using something like:
PI * (WIDTH / 2)^2 * height
The variables in all caps would be named constants. Using them makes the code more readable to other people than if we were to just use their values like:
3.14 * (145.75 / 2)^2 * height
A. Mouse coputer
B. Disk drive