Which Marketing Cloud tool allows users to create personalized and dynamic content for emails?

The correct choice is Content Builder, as it is specifically designed to facilitate the creation of personalized and dynamic content for various digital marketing channels, including emails. Content Builder provides a user-friendly interface that allows marketers to easily combine various types of content such as text, images, and videos, while also enabling the use of personalization strings and dynamic content blocks.

This tool is essential for creating tailored communications that can adapt to each recipient's preferences, behaviors, and other attributes, which enhances engagement and improves overall email performance. The ability to create dynamic content, where sections of the email change based on recipient data, is a powerful feature that Content Builder supports effectively.

While the other options like Journey Builder, Email Studio, and Audience Studio have their own important functionalities within Marketing Cloud, none are primarily focused on creating personalized dynamic content in the same comprehensive and streamlined way that Content Builder does. Journey Builder is more about orchestrating customer journeys, Email Studio focuses on sending and managing emails, and Audience Studio is centered around audience segmentation and data management rather than content creation.