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