The 3D figure shows the view of an object. Identify the correct view looking in the direction of arrow, amongst the answer figures.
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The arrow looks along the longer horizontal direction at the left-front face. Work out the left-to-right positions of the lower layer, the tray on top and the tall thin post.
The arrow is perpendicular to the left-front face, so we draw the elevation looking along that direction. The width seen in the view is the length of the left-front face. The object has three parts: (i) a lower layer made of a flat slab at the far left and a support block under the right end of the tray, together about 3.5 units wide and 1 unit high; (ii) a tray (a block with a pocket in its top) one unit thick resting on the right two units of this lower layer; (iii) a thin tall post, half a unit wide and two units high, standing on the left slab. In the elevation the lower layer is therefore a long rectangle (3.5 units) at the bottom, the tray is a rectangle two units wide on its right part, with its left edge continuing as a vertical line down to the base, and the post is a narrow tall rectangle at the left, rising two units above the lower layer. Option (1) shows exactly this: a long bottom row, a block of height 1 above its right 2 units, and a thin post two units high at the left. Option (2) draws the upper layer as wide as the lower one, option (3) puts the post over the middle with a wrongly framed block, and option (4) shows a single wide block with no step at the left end. Answer: (1) the first answer figure
