Final answer:
The frame rate to stop motion with high-speed motion picture cameras depends on the camera model, with options ranging from 24 to 120 fps or higher, depending on the need to freeze or slow down motion.
Step-by-step explanation:
The frame rate at which high-speed motion picture cameras stop motion depends on the camera model and the desired effect. Generally, to freeze action in photography, a shutter speed of at least 1/250th of a second is needed. This is because faster subjects require quicker shutter speeds to capture them clearly without blur. Cameras in sports scene mode often automatically set a faster shutter speed to achieve this effect. However, the precise frames per second (fps) can vary and include common settings like 24 fps for cinematic motion, 60 fps for smoother video, and 120 fps or higher for high-speed action or slow-motion effects. The correct answer to the question would be d) Depends on the camera model.