What can be used to set up a chat channel that has chat invitations pop-up automatically on the company's website when a customer has been on the page for more than 15 seconds?

The correct choice is the first one, which includes Static Resources, Skills, and Salesforce Sites. This option highlights the combination of technologies and capabilities necessary for implementing an automatic chat invitation feature on a company's website.

Static Resources allow developers to upload files, such as JavaScript or CSS, that enhance the functionality of a chat component on the website. Salesforce Sites plays a crucial role by enabling the creation of public websites that can interact with Salesforce data and applications. By utilizing Salesforce Sites, the chat functionality can be embedded within the company's web pages, seamlessly integrating with the business's environment.

Skills pertain to the attributes assigned to chat agents, allowing the system to appropriately route chat invitations to the most qualified representatives based on the customer's needs and agent availability. This routing ensures that when a chat invitation pops up after 15 seconds, it goes to the right agent, enhancing customer experience.

The other options do not effectively meet the needs of setting up a chat channel with automatic pop-up invitations. The second option, for instance, points to Live Chat and Chat Bots, which are essential components but lacks the mention of Static Resources and Salesforce Sites that are critical for proper implementation on a website. The third option focuses on case management components that do not directly relate to real-time