Here's a breakdown and answer of this exact problem from a professional pet photographer. https://puptrait.com/dog-photographer/what-internal-part-of-the-camera-allows-images-to-be-viewed-prior-to-capture/
The question isn't quite clear. From what I can gather, you're asking what part of the camera will allow Jake to review his photo. If so, the answer is the playback button. If this is not what you were trying to ask, please elaborate and make yourself clear.
