There are exactly 11 distinct nets of a cube. Check each net (A, B, C, D) against the known cube-net patterns (cross, T-shape, zigzag, etc.).<br><br>
A net that folds into a cube must have 6 squares connected edge-to-edge, with no overlapping faces when folded.<br><br>
3 of the 4 nets can form a cube.<br><br>
Final Answer: 3