Final answer:
The most noticeable animation technique in 'Spirited Away' is fluid animation, which brings the magical world and its characters to life with smooth and lifelike movements.
Step-by-step explanation:
The animation element or technique that is most noticeable in the film 'Spirited Away' is the fluid animation. This technique involves creating animation that appears smooth and lifelike, which is a hallmark of Studio Ghibli films. The characters' movements and expressions, as well as the flowing water and flying scenes, exhibit a remarkable level of fluidity that brings the fantastical world to life. This fluidity is essential for conveying the magical essence of the film's setting and the emotional narratives of its characters. Alongside fluid animation, character design and background art are also exemplary, with imaginative creatures and detailed environments that are visually stunning. The cinematography of 'Spirited Away' further enhances the experience, with careful shot composition that guides the audience's focus and contributes to the storytelling.