The answer is (A)
The arrows themselves on the end of the line are used to
indicate the direction of the sight for the section view and from which
direction it is viewed in. These lines look like 2 perpendicular lines with
arrows and are drawn at the end of the line. 
 
 
 
        
             
        
        
        
The power supply and the Hard drive are the two components that makes loud whining noise when a problem is detected.
<u>Explanation:</u>
- Computers can undergo what's called “coil whine,” which is a high-pitched noise that originates from the computer. 
- coil whine is an unacceptable noise emitted by an electronic component vibrating as power runs through an electrical cable. 
-  It's easy to infer that the noise is an indication of influential computer malfunctioning or that something is cut, disconnected, or about to collapse.
- It is normally caused by an electrical current passing through a power-regulating component like a transformer or inductor, inducing its electrical wiring to vibrate at a shifting frequency. 
-  Luckily, coil whine is normal behavior.
 
        
             
        
        
        
Answer:
"Feedback" is the correct answer for the above question.
Explanation:
- Feedback is used in any information system or any communication system to tells that any process is doing in the right direction.
- It is used in communication channels to tell the sender that the message is received by the receiver.
- It is a type of message which is sent by the user to the system that he gets the correct or wrong output by that system.
- The above question asked about the term which is used in the information system which suggests changing the processing activity. This is known as feedback which is described above. 
 
        
             
        
        
        
Answer: It allows you to locate materials, be aware of your assignments and plan time to get things done.
Hope it helped.