To determine which paper clip has the most chance of moving toward the magnet, we need to consider the distance of each paper clip from the magnet. The closer a paper clip is to the magnet, the stronger the magnetic force acting on it and, therefore, the greater the likelihood it has of being attracted and moving toward the magnet.
Without seeing the actual distances in the student's picture, I can't specify which paper clip (W, X, Y, or Z) has the most chance of moving. However, if you know which paper clip is closest to the magnet, that would be the correct answer.
Please check the image to see which paper clip is nearest to the magnet and select that one as your answer.