Kofi and Sunita are standing in a room with a single window. Kofi is standing right next to the window and Sunita is on the opposite side of the room. It is daytime and the sun is shining directly through the window. Kofi observes that his shadow is cast on the floor stretching towards the opposite wall where Sunita is standing. What happens to Kofi's shadow if Sunita steps in between Kofi and the wall?

Respond very briefly.
When Sunita steps between Kofi and the wall, she will block the sunlight coming through the window, casting her own shadow on the wall. Part of Kofi's shadow that was stretching towards the wall will now fall on Sunita. This is because Sunita's body obstructs the light that would have projected Kofi's shadow onto the wall behind her, thus her shadow will overlap with where Kofi's shadow would have been if she had not stepped in between.