Step 1: The object is made of upright slabs of equal height standing side by side: a left slab, a middle slab with a crossbar joining it to the left slab, and a tall right slab that is deeper than the rest and sticks out in front. Step 2: Measure across the width. Left slab about 27 percent, gap about 15 percent, middle slab about 28 percent, right slab about 29 percent of the total width. Step 3: The right slab runs the full depth of the plan, while the middle slab and the left slab leave an open gap between them. The crossbar spans the gap in the middle of the depth and ends at about the middle of the middle slab, which gives an inner box between the end of the crossbar and the right slab. Step 4: In the top view the middle slab is cut into a top box and a bottom box by the crossbar, and the inner box lies between them. Step 5: Only option (3) has the correct proportions (columns of similar width, a gap of about 13 percent, a full-depth right slab of about 29 percent) and the inner box next to the right slab. Option (1) has too narrow a gap, option (2) has a narrow right slab and a thin inner strip, and option (4) has a right slab that is too thin. Answer: (3) the figure in option 3
