Explanation:

- TLS (Transport Layer Security):

- It is a security protocol designed to provide secure communication over a computer network.

- Often used in web browsing, such as securing HTTPS websites.

- SSL (Secure Sockets Layer):

- An older security protocol, but similar in purpose to TLS.

- Originally created to secure communications over networks.

- IPsec (Internet Protocol Security):

- A protocol suite for securing internet protocol communications.

- Provides end-to-end security in network communications by authenticating and encrypting each IP packet.

- MIME (Multipurpose Internet Mail Extensions):

- NOT a security protocol.

- It is a standard for formatting non-text email content so it can be sent via email.

Correct Answer: Option:4, MIME