Which of the following is the best example of diffraction?(1 point)

please which one is correct i keep seeing different answers
Responses

light bending as it enters a new medium.
light bending as it enters a new medium.

light shining through a keyhole and spreading out into a dark room.
light shining through a keyhole and spreading out into a dark room.

light entering a prism and coming out showing the colors of the rainbow.
light entering a prism and coming out showing the colors of the rainbow.

light scattering in the atmosphere.

The best example of diffraction among the given options is:

light shining through a keyhole and spreading out into a dark room.