Answer:
Option C, ENCRYPTING FILE SYSTEM (EFS).
Explanation:
Encryption is one of the best protection methods available to keep all one's digital assets safe.
Encrypting file system (EFS) is a feature of windows 2000 operating system that allows any file or folder be stored in an encrypted form and decrypted only by an individual user and an authorized recovery agent.
EFS provides filesystem-level encryption. This technology enables files to be transparently encrypted to protect confidential data from attackers with physical access to the computer.
To encrypt or a file using EFS;
Open windows explorer
Right-click the file or folder and select properties
Click advanced in the general tab
Check encrypt contents to secure data
Click ok.
Therefore, option C, ENCRYPTING FILE SYSTEM, is an encryption tool that allows users to encrypt files and folders by simply right-clicking a given object and setting a few options.