The net of a cube is a two-dimensional representation of a three-dimensional cube that can be folded to form the cube. It consists of six equal squares, each representing a face of the cube. Therefore, the correct answer is option 'B' - 6 squares.

Explanation:
A cube is a three-dimensional solid object with six square faces, twelve edges, and eight vertices. When a cube is unfolded along its edges and flattened out, it forms a two-dimensional shape called the net of the cube.

The net of a cube consists of six squares, where each square represents one face of the cube. These squares are connected at their edges and corners to form the complete net. By folding along the edges, the net can be transformed into a three-dimensional cube.

Each square in the net represents one face of the cube, and there are six faces in total. Therefore, the net of a cube contains six squares.

To visualize this, imagine taking a cardboard box and cutting along the edges to create a flat net. Once you flatten out the cardboard, you will see that it consists of six squares, each representing a face of the cube.

In summary, the net of a cube contains six squares, each representing one face of the cube.