One technique is that the front objects are larger and lower than than the background
Answer:
I think the answer is value. I'm sorry if this isn't correct I'm not really good
Jonny depp - 1963/06/09. Ben stiller - 1965/11/30. Halle berry - 1966/06/14
The frets could be somewhere alongside the neck. Some diagrams are in favor of vertically oriented, rather than horizontally. But they function the same way, just turn it 90 degrees clockwise. So, the answer is fretboard diagrams can be oriented vertically or horizontally.
C. it indicated personal rank.