Which of the following statements is TRUE regarding the changes in connectors between Mule 3 and Mule 4?

The statement regarding connectors being separated into independent extension libraries is accurate in the context of changes from Mule 3 to Mule 4. In Mule 4, connectors are designed to be modular and are generally provided as standalone extensions. This allows for more flexibility, as developers can choose to include only the specific connectors they need for their application, facilitating easier updates and maintenance.

By organizing connectors into independent libraries, MuleSoft enhances the versatility of the platform. This modular approach also simplifies the process of extending the Mule runtime by allowing third-party developers to create and publish their own connectors via the Anypoint Exchange, which is a significant evolution from the Mule 3 architecture where many connectors were bundled with the core runtime.

This change promotes a more efficient use of resources and encourages community contributions to the MuleSoft ecosystem, leading to a more extensive array of available integrations without bloating the core runtime itself.