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.
You're going down on the scale so you'd start backwards I believe. The last note was Mi if you're only counting the spaces, meaning that Re is missing.
