Which messaging service allows for multimedia content?

The correct option is MMS, which stands for Multimedia Messaging Service. This service extends the capabilities of traditional SMS (Short Message Service) by allowing users to send not only text messages but also multimedia content such as images, audio, and video. This flexibility in content type makes MMS a powerful tool for marketers and advertisers who want to engage users with more dynamic and visually appealing messages.

In contrast, SMS is limited to text-only communications, which restricts the type of content that can be conveyed to recipients. Therefore, while SMS is effective for straightforward, concise communications, it does not support the rich media that MMS can deliver.

The other terms, iFrame and SafeFrame, are not messaging services but rather web technologies used in displaying content and advertising in a web environment. iFrame is a way to embed another document within a web page, and SafeFrame is a framework designed to enhance the safety and security of ad placements. Both are important in the context of online advertising but do not relate to messaging services that allow for multimedia content.