The scrambling of code is known as:

The correct answer is: A. Encryption.

Encryption is the process of converting data into a form that cannot be easily understood by unauthorized people. It is used to protect sensitive information, such as passwords, credit card numbers, and medical records.

There are many different encryption algorithms, but they all work by scrambling the data in a way that can only be unscrambled with a key. The key is a secret piece of information that is used to encrypt and decrypt the data.

Encryption is a very important security tool, and it is used by businesses, governments, and individuals to protect their data.

Here is a brief explanation of each option:

• A firewall is a security system that monitors and controls incoming and outgoing network traffic. It is used to protect a computer or network from unauthorized access.
• Scrambling is the process of making something difficult to understand. It can be used to protect information, but it is not as secure as encryption.
• Password-proofing is the process of making passwords more secure. It can be done by using strong passwords, requiring frequent password changes, and using two-factor authentication.