Final answer:
The correct term for the slow push in of the camera in 'Citizen Kane' is a Dolly-in, where the camera physically moves closer to the subject.
Step-by-step explanation:
The slow push in of the camera in the clip from "Citizen Kane" is referred to as a Dolly-in. The terms Push-in and Dolly-in are often used interchangeably to describe the camera movement where the camera physically moves closer to the subject. This is different from a Zoom, where the camera remains stationary and only the lens changes to give the illusion of moving closer. A Movement shot can refer to any type of camera movement, not specifically one that moves closer or further from the subject. Therefore, the correct answer is C) Dolly-in.