Final answer:
Scout should use gesture drawing for her storyboard as it efficiently captures the action and essence of the objects with quick and deliberate marks, making it suitable for the purpose of storyboarding in animation.
Step-by-step explanation:
Scout is developing a storyboard for an animated film and needs a drawing technique that captures the form of objects without the need for perfect lifelikeness. In this scenario, gesture drawing is the most appropriate technique for Scout to use because this method excels at capturing an action of an object using quick, fluid, and deliberate marks. Gesture drawing is often employed by artists as preliminary sketches to quickly capture the essential movement and form, which is ideal for storyboarding where conveying motion and general shapes takes precedence over detailed accuracy.