Storyboard.
Storyboarding is a technique used in design and film production to create a visual representation of a story. It is a sequential art where images are arrayed together to visualize the story. Storyboards are often used in UX design to plan and visualize the user's journey through a product or service. They help designers identify user needs, pain points, and opportunities for improvement in the user experience. Therefore, the correct answer is Storyboard.