D is an open ended question because it requires an explanation.
The Flipbook and Zoetrope were further developments on the Phenakistoscope, making it easier for people to view the motions. ... Stop motion for example, also uses individual none moving frames, but with objects, and when put together in a sequence it creates this flowing unbroken movement.
It's B. Point and shoot cameras are not used by professionals and they definitely don't have interchangeable lenses
