Answer: The boy's feet are closer to the surface.
Step-by-step explanation: It is stated that the girl's feet are negative 4 over 5 yards from the surface. This fraction can be represented as -4/5. The boy's feet are negative 2 over 5 feet from the surface. This fraction can be represented as -2/5.
When dealing with number lines and situations of such, the surface always is 0, which we call the origin. Anything to the left but closest to 0 is greater in value because it's less of a negative number. In that case, -2/5 > -4/5. Without the negative signs, it would be the other way around.
Final answer: The boy's feet are closer to the surface by 2/5 yards.