NA

If we proceed clockwise pin head is followed by T-shaped design. So , figure ( 2 ) is correct answer .

From the given above question figures , we can see that
In each subsequent figure the design rotates through 45° in anticlockwise direction and the designs (O and X) interchange positions.
Hence , figure ( 2 ) will come on the place of ? in question figure .As shown in answer figures .

From first figure to second figure the design becomes shaded.

From the first figure to the second figure all the four smaller designs move one sector in anticlockwise direction.

NA

There is 6 columns with 2 cubes each.
Total boxes = 6 × 2 = 12

From first figure to second figure in the first unit of Question Figures the design rotates through 90° clockwise.