Where can web applications integrated through Force.com canvas be placed?

Web applications integrated through Force.com Canvas can indeed be placed in various locations across the Salesforce platform, which makes the option indicating "All of the above" correct.

The Force.com Canvas framework enables developers to integrate external applications seamlessly within the Salesforce environment. By utilizing this framework, web applications can be embedded within different components, thus enhancing user experience and engagement.

When it comes to placement options:

• A Chatter tab allows users to access external applications directly from the Chatter interface, enabling collaborative functionalities while still interacting with third-party tools.

• Visualforce pages provide a customizable experience within Salesforce where developers can create unique UI components. Web applications can be embedded here for a more tailored solution.

• The Salesforce console is designed to provide a high-performance user experience, particularly for support and sales use cases. Integrating an external web application within the console ensures that users have all the necessary tools at their fingertips, streamlining workflows.

Because Force.com Canvas supports the integration of web applications in these various contexts, it highlights the versatility and flexibility that Salesforce offers as a platform for delivering integrated solutions. Thus, choosing "All of the above" confirms the capability to embed web applications across multiple areas within Salesforce.