Final answer:
The main benefit of using TFTP over SFTP is its simplicity and lightweight nature, making it more efficient for specific tasks that do not require advanced security features.
Step-by-step explanation:
The benefit of using TFTP (Trivial File Transfer Protocol) over SFTP (SSH File Transfer Protocol) is C) Simplicity and lightweight. Unlike SFTP, TFTP is a very simple protocol that lacks many features found in more complex file transfer protocols. TFTP does not offer features like authentication and encryption, but its simplicity means that it consumes fewer resources, making it faster and more efficient for certain tasks where advanced security and features are not necessary, such as loading firmware onto routers or transferring small files in a trusted environment.