The process of creating a system which divides documents based on their security level to...

 Explanation:

Data classification is the process of categorizing data based on its sensitivity and security level to ensure appropriate access controls.

It helps organizations manage and protect private and sensitive data effectively.

 Why Other Options Are Incorrect:

A. Security coding: Refers to secure programming practices.

B. Data security system: A broad term that does not specifically describe categorization.

D. Privacy protection: Focuses on safeguarding individual privacy but does not involve categorization of data.

 EC-Council CISO Reference:

Data classification is a fundamental practice in information security management, enabling organizations to align protection levels with data sensitivity.