Which formats are supported by the REST API?

The correct choice highlights that the REST API supports both XML and JSON formats. This versatility allows developers and integrators to utilize either format based on their needs or the preferences of the systems they are interfacing with. JSON has become the more commonly used format due to its lightweight structure and ease of integration with modern web applications, particularly in JavaScript environments. However, supporting XML ensures compatibility with legacy systems and applications that may require or prefer this markup language.

The inclusion of both formats also enhances overall flexibility within integrations, as developers can choose the format that best aligns with their project requirements or the specifications of the consuming application. This dual support is a significant feature of Salesforce’s REST API, catering to a wide range of integration scenarios.