If you gently push on the side of your eye with your finger the scene before you will

appear

a. stable because brain mechanisms compensate for the eye's movements.
b. to move because the eye muscles did not produce the movement.
c. stable because the image on the retina does not move.
d. to move because the images in the foreground remain stable while the background shifts.
e. to blur and then clear with each press as the shape of the eye is distorted.

b. to move because the eye muscles did not produce the movement.