The correct answer is decreases
The further away you are the weaker it would be. That's why at one point you stop being in the field and ti doesn't pull you towards it anymore. Proportionally, if you move towards the Earth then it increases.
It seems that you have missed the necessary options for us to answer this question, but anyway here are the answers. The interaction between two optical and perceptual phenomena makes moving pictures possible. the persistence of vision provides the illusion of SUCCESSION <span>while the phi phenomenon provides the illusion of MOVEMENT. Hope this helps.</span>
Zebra coloration - the coloration makes it harder for predators to spot.