We have two blocks, A and B. Block A has two medium yellow squares. This block also has a medium black square. It also contains a medium blue square. Medium yellow square number one is touching the bottom edge of this block. Below medium yellow square number two which is below the medium blue square there is the medium black square. Medium yellow square number one is below the medium black square , medium yellow square number two and the medium blue square. To the left of block A we have block B which has a medium black square.
Which object is below a medium black square? the medium yellow square that is touching the bottom edge of a block or medium yellow square number two?
the medium yellow square  that is touching the bottom edge of a block  medium yellow square  number two both of them none of them