In electronic mail, which of the following protocols allows the transfer of…

Answer: MIME

Why this is correct:

• MIME stands for Multipurpose Internet Mail Extensions and is the standard that defines how to represent non-text and multi-part content inside an email.

• It defines content types (for example, image/jpeg, audio/mpeg, video/mp4) and multipart message structures so multiple parts and attachments can be included.

• MIME specifies encodings (such as base64) to safely represent binary multimedia data within the text-based email transport.

Role of other protocols:

• SMTP handles sending messages between clients and servers but relies on MIME to format attachments and multimedia within the message.

• IMAP and POP3 handle accessing and retrieving messages from a server; they do not define how multimedia is encoded inside the message.

In short, MIME is the standard that enables multimedia and attachments to be included in email messages; the other protocols transport or access those MIME-formatted messages.