Final answer:
To apply a transition to every slide in a presentation, you would typically select a transition from the Transition menu and choose an option like 'Apply to All' to ensure consistency throughout the presentation. Option b is correct.
Step-by-step explanation:
The question asks which option would apply a transition to every slide in a presentation. In presentation software, such as Microsoft PowerPoint, the option for applying a transition to every slide is often found within the Transition menu. While you can animate text and graphic elements and set transition effect duration for individual slides or objects, or even insert audio and video clips, these actions do not apply a universal change to all slides. When you choose a transition and apply it to every slide, this action ensures a cohesive visual flow throughout the presentation and maintains consistency in the viewer's experience from one slide to the next.
To apply a transition to every slide, you'd normally select the desired transition from the list of options and then choose 'Apply to All' or a similar command that indicates a universal application. This feature is essential when you want to maintain a professional and uniform appearance for your entire presentation.