The shapes in the image that represent cuboids are B and D.

Here's why:

• A cuboid has six rectangular faces, and when unfolded into a net, it must show six connected rectangles.
• Nets B and D both show six rectangular faces arranged in a way that can be folded into a cuboid shape.

Let me know if you'd like further details or have any questions!

Here are some additional questions to consider:

1. What are the properties of a cuboid net?
2. How can we identify a net that folds into a cube instead of a cuboid?
3. Which nets represent other types of 3D shapes?
4. Can you create different cuboid nets with the same six faces?
5. How many unique nets can form a cuboid?

Tip: When identifying nets for cuboids, always look for six rectangles that can fold into a three-dimensional shape with pairs of opposite faces matching in size.