There are three blocks. Lets call them A, B and C. Two medium black squares are in block A. Medium black square number one is below medium black square number two. To the left of block A we have block B which has a medium black square. To the left of block A there is block C. It contains one medium blue square, a medium black square and a medium yellow square. The medium blue square is touching the bottom edge of this block. It is below the medium yellow square and the medium black square. The medium black square is below the medium yellow square.
Which object is to the left of a medium black square? the medium yellow square or the medium blue square that is touching the bottom edge of a block?
the medium yellow square  the medium blue square  that is touching the bottom edge of a block  both of them none of them