A student conducts an experiment with a magnet and four objects. He puts the magnet near each of the objects, and then observes and records the outcomes. Which question is the student's experiment designed to answer?

Can a magnetic force change the shape of an object?

Which type of magnet can move an object?

How does an object's mass affect its reaction to a magnetic force?

Which objects react to a magnetic force?

Which objects react to a magnetic force?