Explanation:

Since the ice is frictionless, the only force acting on the two people is the force they exert on each other. According to Newton's third law, the force that the heavier person exerts on the lighter person is equal in magnitude but opposite in direction to the force that the lighter person exerts on the heavier person.

This means that the heavier person will accelerate towards the lighter person at the same rate that the lighter person accelerates away from the heavier person. Therefore, the lighter person will experience a greater acceleration.