Which of the following can make a slide interactive?

The option that involves a link to a form stands out as a way to create interactivity on a slide. When a slide includes a hyperlink to a form, it encourages audience engagement by allowing them to actively participate in a survey or provide feedback directly through the form. This interactivity can enhance the learning experience by inviting direct input from the audience, making the presentation more dynamic and participatory.

Including a link transforms the passive viewing of a presentation into an active experience, where users can engage, respond, and contribute their thoughts or data in real-time. Such forms can be used for various purposes, including quizzes, polls, or feedback collection, which further supports the learning objectives of the presentation.

In contrast, a static image does not allow any interaction; it simply presents information without engaging the audience actively. Instructions provided are more about directing the audience rather than involving them interactively. While a Google Hangout might create a space for discussion, it does not inherently provide interactivity within the context of a slide presentation as a direct link to a form does. Thus, the option linking to a form is the one that effectively fosters interactivity on the slide.