Uids 1-500 are usually reserved for what kind of users?

Question

Problem:

I am new, I need help, can anyone help me?
UIDs 1-500 are usually reserved for what kind of users?

• System accounts, such as server processes*
• Are not used for user accounts, but for group accounts
• Log-in (human) users
• Remote log-in accounts

Answer 1

As per my experience and knowledge 

The correct answer is: ​System accounts, such as server processes
  
Hope this might help you.