Answer:
Option C is the correct answer for the above question
Explanation:
Authentication is used to grant a person to use the system so that no other person can hack the data of the system. It is done by some unique id which is provided to the user of that system. When any person wants to use the system he needs to use that a unique id and sometimes password and some other information to use the system.
The above question asked about the process through which the user of the system grants access to use the system only. So the process is Authentication. hence Option C is correct because it states about the process Authentication while the other is not because--