The net at the top is folded into a die with the dots outside. Which of the dice (a) to (d) can be made from it?

From the net, 1 is opposite 6, 2 is opposite 4 and 5 is opposite 3, so (b) (1 with 6) and (d) (5 with 3) are impossible. (a) has 1, 2 and 5, but they go round their corner the wrong way (a mirror image). Only (c) matches the folded net.