Answer:
The first option
Step-by-step explanation:
Like magnets, gravitational pull gets stronger the closer you are to the source. That's why oxygen levels decrease the further you are from earth's centre: when when you're touching the ground, the highest mountain's atmosphere is much thinner than the one at sea level.
From that we can conclude that gravity grows in strength the closer you are to the mass of an object. That means the greater force should happen when the man is standing closer to the building.