The question is asking to choose among the following choices that state what would the domain in an email represents, base on my research, I would say that the answer would be letter B. location of the destination. I hope you are satisfied with my answer and feel free to ask for more 
        
             
        
        
        
Answer:
The correct option is Option B
Explanation:
We need to find examples of client-side code.
Client Side code: The part of code, that doesn't require server for performing specific task
SO, The correct option is Option B
Prompt for special characters in user name
Reason: We can use alert to generate prompt using JavaScript or through validation and it can be done on client side.
All other options, we need to hit the server to perform the task, So they are not client-side code.
 
        
             
        
        
        
<span>Server virtualization in windows server 2012 r2 is based on a module called the</span> hypervisor.