You much list something after a colon. 
For example
Kaylina's bag included: 
Food,Books,Makeup,and a brush.
        
             
        
        
        
Answer:
Option (A) is the correct answer.
Explanation:
A Computer system can be the target for the crime on which a criminal can acquire the information from the computer system which is stored on it. A Criminal is targeting the system with the help of some software that is entered on the computer system through a network.
In the above question, paragraphs are describing the content related to the crime which targets the computer system. This is a concept of a "computer as target". Hence option "A" is the correct answer while the other is not valid because--
- Option b suggests the concept behind the storage device of a computer but in the question, it is about the crime of a computer. 
- Option c suggests the concept behind the computer is a criminal but in the question, it is about the crime of a computer. 
- Option d suggests the concept behind the communication of a computer but in the question, it is about the crime of a computer. 
 
        
             
        
        
        
Network & internet connection
        
             
        
        
        
Answer:
NFC(Near Field Communication).
Explanation:
When user wants to share pictures quickly between the mobile devices which are in very close proximity we can use NFC(Near Field Communication).
Near Field Communication(NFC):-It is a group of communication protocols that lets two devices most of the times these are mobile phones to establish connection and the distance between them should be less around 4 centi meter.