Final answer:
The question inquires about the process named encryption, which secures electronic data from unintended recipients. Although the term 'Encryption' is not among the multiple-choice answers, 'encoding' is similar but refers generally to the conversion of data, not specifically its security.
Step-by-step explanation:
The process of encoding electronic data so the info cannot be retrieved or decoded by an unintended recipient is called Encryption. The correct answer to this question is not explicitly listed but based on the provided options, the closest term is encoding, which generally refers to the broader process of converting data into a particular form. However, encoding alone does not necessarily secure data from interception, it's a process involved in general data handling. Specifically, for data security, it's the process of encryption that encodes the data to prevent unauthorized access. None of the other options (A) Decryption, (C) Authentication, or (D) Firewall directly refer to this process of protecting data against unauthorized access.