This page is an entry in the Key.
This is just a term for the relative brightness of various areas of a photograph.
The depiction of those relationships must not mispresent the appearance of the scene pictures, as per Q7.
In TCQ photographs, “not misrepresenting brightness relationships” is not simply a matter of which depicting areas are brighter or darker (almost all non-“negative” images preserve those relationships on some level).
Instead, it’s a matter of how much darker or how much brighter some areas are in relation to others.