According to SFRA, which code snippet correctly provides data to a response using a controller?

The choice that correctly provides data to a response using a controller in Salesforce Reference Architecture (SFRA) is the one that uses res.setViewData. In SFRA, res.setViewData is specifically designed to attach data to the response. This function allows you to pass a JavaScript object that contains the data you want to make available to the view layer, ensuring that the data can be accessed within the rendered template.

In this code snippet, after setting the view data with res.setViewData({ data: myDataObject }), the next step is to render the specified template using res.render('/content/myPage'). This effectively ensures that the view has access to the data you've passed, allowing it to present the information dynamically on the page.

Following the render call, next() is called, which is a common practice in middleware for continuing to the next middleware function in line. This is important for maintaining the flow of the request in middleware-based architectures, such as Express, which SFRA is built upon.

The other choices do not correctly implement the mechanism for providing data corresponding to the SFRA design principles or best practices. For instance, in other options, either the data is not set using the SFRA-specific