Answer:
Boy's feet.
Step-by-step explanation:
Since, the one who is less far from the surface is called closer to the surface.
Given,
The distance of girl's feet from the surface = [tex]-\frac{4}{5}[/tex] yards,
Also, the distance of boy's feet from the surface = [tex]-\frac{2}{5}[/tex] yards,
[tex]-\frac{2}{5}< -\frac{4}{5}[/tex]
Thus, the feet of boy are closer to the surface.