There are three blocks. We call them A, B and C. Block C is below blocks A and B. Block A contains one medium blue square. Block B has a medium black square, a medium yellow square and one medium blue square. The medium yellow square is below the medium blue square. The medium black square is touching the bottom edge of this block. It is below the medium yellow square and the medium blue square. Block C has one medium black square.
Which object is below a medium blue square? the black shape that is touching the bottom edge of a block or the medium yellow square?
the black shape that is touching the bottom edge of a block  the medium yellow square  both of them none of them