Which one of the four partial nets can be folded to make the cube on the left?
For these questions, it is often difficult to spot the correct answer. Therefore, a good way to solve these questions is to eliminate the answers that are wrong. Look for the following types of errors on the nets:
(i) nets which have shapes on what are opposite faces of the cube
(ii) nets which when folded into a cube have a shape which has been rotated or is pointing in the wrong direction
(iii) nets which when folded into a cube have a shape on the wrong face of the cube (e.g. a shape that should be on the left face appearing instead on the right face or top face)
Eliminate A because if you fold the net so that the crescent is on the top face, then the shape on the left face is rotated i.e. the arrow points in the wrong direction.
Eliminate B because the shapes linked by the yellow arrow (shown in the figure below) are on opposite faces.
Eliminate C because if you fold the net so that the arrow is on the left face, then the crescent on the top face is rotated.
In the figure above, one pair of opposite sides is linked by the yellow arrow(s), another pair of opposite sides is linked by the red arrow(s), and the other pair of opposite sides is linked by the green arrow(s).