Answer: Shape 3
Step-by-step explanation:
From the given picture, we can see a cylinder cut by a plane along the diameter or chord of the bases of the cylinder(circle).
Thus it will form a cross section with width as the diameter or chord of the circle and length as the height of the cylinder.
Therefore, the resulting cross section will form a rectangle .
Hence shape 3 (a rectangle) is the shape which is the resulting cross section.
